198,294 research outputs found
Capillipedium mistryi A. P. Tiwari & S. N. Landge 2021, sp. nov.
No full textCapillipedium mistryi A. P. Tiwari & S. N. Landge, sp. nov. (Fig. 1 & 2) Type:— INDIA, Madhya Pradesh, Hoshangabad district, Bori Wildlife Sanctuary, Bori Range, 22°15’ to 22° 30’ N lat. and 77°45’ to 78 30’ E long., ca. 500 m elevation, 15 November 2019, A. P . Tiwari 35 (holotype: CAL!; isotype: BLAT!). Diagnosis:— Capillipedium mistryi is closely allied to C. spicigerum in longer racemes, but differs in pedicel and rhachis internode solid, if slightly channeled then not with a translucent groove (vs. with a distinct translucent groove), shorter panicle 4.0–7.0 × 3.0–5.0 cm (vs. 10–25 × 5.0–8.0 cm in the latter), racemes with 11–25 sessile spikelets (vs. racemes with 3–8 sessile spikelets), sessile spikelet 2.5–3.0 mm long (vs. 3.0–4.0 mm long).Published as part of Tiwari, Arjun Prasad & Landge, Shahid Nawaz, 2021, Capillipedium mistryi (Andropogoneae, Poaceae): a new remarkable species from central India, pp. 51-57 in Phytotaxa 498 (1) on page 52, DOI: 10.11646/phytotaxa.498.1.6, http://zenodo.org/record/542409
Phyllomimus midoriyae Tiwari and Diwakar 2024, sp. n.
No full text<i>Phyllomimus midoriyae</i> Tiwari and Diwakar sp. n. <p>(Figs. 2–3)</p> <p> <b>Material examined:</b> <i>Holotype</i>: Male. <b>INDIA</b>: Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l. 2017, Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l., 2021 Coll. Chandranshu Tiwari (2 ♂), Arunachal Pradesh, Namdapha Tiger Reserve, Changlang ~ 200–4,571 m a.s.l. 2017 Coll. Chandranshu Tiwari (1 ♂)</p> <p> <b>Type locality.</b> Hollangapar Gibbon Wildlife Sanctuary, Jorhat, Assam, India.</p> <p> <b>Measurements (length in mm):</b> Body 25.43 (1.24); Tegment 32.14 (1.39); Pronotum 5.22 (0.61); Fore-femora 8.54 (0.54); mid-femora 7.24 (0.99); hind-femora 12.79 (0.45); Fore tibia 7.95 (0.55); Mid tibia 6.40 (0.17); hind-tibia 11.65 (1.06); file 4.4 (0.54).</p> <p> <b>Distribution:</b> Nocturnal. Found only inside the dense understorey. In addition to the type locality, The collector also heard the same call type in Namdapha Tiger Reserve, Arunachal Pradesh. The species is likely to be distributed in North-East Himalayas.</p> <p> <b>Seasonal occurrence:</b> The species was observed perennially at the type locality.</p> <p> <b>Etymology:</b> The species is named after Izuku Midoriya, the eighth inheritor of One for All and the protagonist in the manga series My Hero Academia (Boku no Hīrō Akademia) by Kōhei Horikoshi. Like its namesake the species is green and difficult to locate in the dense understorey while simultaneously being the most distinct part of the acoustic community (Midori=green).</p> <p> <b>Differential diagnosis:</b> The species is similar to <i>Phyllomimus detersus</i> (Walker 1869) but differs in the following characters: Fore femora and mid femora unarmed, hind tibia with 2 rows of ventral spines, post tibial joint with distinct blue-green ring. Tegmen with silver-gray spots in radial field. The call pattern of <i>P. midoriyae</i> matches to <i>P. inversus</i> in temporal but differs in having a narrower bandwidth in case of <i>P. midoriyae</i> (Heller 1995; Tiwari and Diwakar 2023a).</p> <p> <b>Description:</b></p> <p> <b>Male:</b> Body stout. <b>Head</b> narrower than the fore border of the prothorax; keel of the vertex lanceolate, furrowed, a little narrower than the first joint of the antennae; front forming a little cone between the sockets of the antennae. Eyes prominent, short-elliptical.Antennae more than twice the length of the body, with short dark bands. <b>Pronotum</b> finely tuberculated, with an indistinct longitudinal impressed line and two strongly marked transverse impressed lines, which slightly converge towards one other on each side, and of which the hind one is more abbreviated than the fore one; fore border and hind border much rounded; sides slightly rounded. <b>Legs</b> stout. Fore- and mid-femora unarmed, hind-femora less than half the length of tegmen with a row of eight small spines. Fore tibia dorsally unarmed, ventrally armed with 5 spines on inner and outer margin. Mid tibia unarmed. Hind-tibia armed with 9 spines on inner and outer margin dorsally, 6 spines on inner and outer margin on ventral side. <b>Wings</b> equal length to tegmen. Tegmen minutely reticulated; costa and interior border nearly straight; three irregular rows of areolets between the scapular vein and the costa; scapular and externomedial vein contiguous for about two-thirds of the length, where they part and are lost in branching; three irregular rows of areolets between the externomedial and the anal vein, and one row of regular quadrate areolets between the latter and the interior border. Tegmen at the base of the radial field, decorated with silver-gray spots. Hind wings pellucid. <b>Stridulatory file</b> with 230±5 teeth (n=3), teeth densely arranged and uniform throughout the length.</p> <p> <b>Male genitalia.</b> Subgenital lamina elongate, with two clavate styles, Cerci poorly cast, short, tipped with a small black tip. Supra-anal plates small and triangular.</p> <p> <b>Female:</b> unknown. Supposed to be similar to that of <i>P. detersus.</i></p> <p> <b>Coloration:</b> Green. Antennae light green with short dark bands apically. Tegmen appears green/yellow when live with silver-gray spots in the radial field, but is hyaline with veins and brownish spots. All femora and tibia light green when alive. Post tibial joint with distinct blue-green ring.</p> <p> <b>Depositories:</b> The specimens are deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2024, The Orchestra Nocturne: Description For Six New Katydid Species From India (Orthoptera: Tettigoniidae), pp. 227-245 in Zootaxa 5405 (2)</i> on pages 231-234, DOI: 10.11646/zootaxa.5405.2.4, <a href="http://zenodo.org/record/10603343">http://zenodo.org/record/10603343</a>
Euconocephalus helleri Tiwari and Diwakar 2024, sp. n.
No full text<i>Euconocephalus helleri</i> Tiwari and Diwakar sp. n. <p>(Fig. 4)</p> <p> <b>Material examined:</b> <i>Holotype</i>: Male. <b>INDIA</b>: Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l. 2020, Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l., 2021 Coll. Chandranshu Tiwari (1 ♂).</p> <p> <b>Type locality.</b> Hollangapar Gibbon Wildlife Sanctuary, Jorhat, Assam, India.</p> <p> <b>Measurements (length in mm):</b> Body 43.12; fastigium 4.5; tegmen 46.65; pronotum 7.11; fore-femora 4.75; mid-femora 6.56; hind-femora 21.83; fore-tibia 5.13; mid-tibia 7.04; hind-tibia 23.9; file 1.4.</p> <p> <b>Distribution:</b> Crepescular <b>-</b> Nocturnal. Bushes and shrubs, fallow land, gardens on the forest edge.</p> <p> <b>Seasonal occurrence:</b> The species was recorded from the type locality during the monsoon and wet post-monsoon period.</p> <p> <b>Etymology:</b> The species epithet is in recognition of Dr. Klaus Gerhard Heller, who has made an invaluable contribution in the taxonomy and bioacoustics of Tettigoniidae.</p> <p> <b>Differential diagnosis:</b> The species is similar to <i>Euconocephalus mucro</i> (Haan 1843) but differs in the following traits: Tegmen rounded with slight downward curve and cerci tip curved inward in a hook-like with a sharp spine. Both species can also be differentiated in the field based on their calls, <i>E. mucro</i> produces a distinct chirping call while <i>E. helleri</i> produces a continuous trill (Tiwari and Diwakar 2019, 2023a).</p> <p> <b>Description:</b></p> <p> <b>Male:</b> Body large and slender. <b>Head:</b> Head triangular in profile, rugose dorsally. Fastigium of vertex conical, elongated, 4.5 mm, Fastigium separated from frons by a notch with a distinct ventral tubercle present at the base of fastigium. Antennae unicolor Eyes suboval and prominent. <b>Pronotum</b>: Pronotum larger than the head; pronotum broader distally, compressed ventrally, anterior dorsal margin concave, posterior margin rounded; transverse sulcus distinct before the middle of pronotum, median carina weak, lateral carinae of pronotum present. Lateral lobes of pronotum longer than high, humeral sinus distinct. Prosternum armed with a pair of spines, mesosternal and metasternal lobes triangular. Thoracic auditory spiracle large, oval, completely hidden under the lateral lobe of pronotum. <b>Legs</b>: genicular lobes of pro femora armed by a single spine on inner side and unarmed on outer side; mid genicular lobe armed by a single spine on both inner and outer side; post genicular lobe armed by bispinose on both side. Fore coxae armed by a forward outward projecting spine. All femora dorsally unarmed. Pro- and mid-femora armed with 4 spines ventrally on the inner margin. Hind-femora ventrally armed with 10 spines on outer and 12 spines on inner margin. Pro- and mid-tibia dorsally unarmed. Pro-tibia ventrally armed with 6–6 spines on inner and outer margin. Mid-tibia armed ventrally with 7 and 8 spines on outer and inner margin respectively. Hind tibia dorsally armed with 5 spines on outer and 6 spines on inner margin. Hind tibia ventrally armed with 14 spines on outer and 16 spines on inner margin. Single dorsal pair of spurs and two ventral pairs (inner small and outer large) of spurs present on the apical region of hind tibiae. <b>Wings.</b> Tegmina longer than hind wings extending beyond the hind wing; apices obliquely rounded. Wings reaching beyond the middle of hind tibiae when folded. <b>Stridulatory file</b> on the ventral side of left tegmen with 100 teeth. File medially curved and raised, narrow on distal and proximal ends.</p> <p> <b>Male genitalia.</b> Supra-anal plate triangular with dorsal basal groove, apex subobtuse. Subgenital plate long, both lateral and middle ridges well developed; apical margin with triangular excision. styles conical and long. Cerci thick with two incurved apical teeth, dorsal tooth shorter than ventral tooth.</p> <p> <b>Female</b>. Unknown. Supposedly similar to <i>E.mucro.</i></p> <p> <b>Coloration</b>. Green to Yellow Green when alive. Antennae yellow to pale green. Lateral margin of fastigium of vertex on both sides with narrow yellow band which extends on the vertex above eye level and reaching up to the posterior margin of pronotum. Tegmen appears green/yellow when live with anterior external margin of the tegmen pale or translucent. All femora same color as tegmen. Tibia pale yellow to white. Claws and tarsal joints pale.</p> <p> <b>Depositories:</b> The specimen is deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2024, The Orchestra Nocturne: Description For Six New Katydid Species From India (Orthoptera: Tettigoniidae), pp. 227-245 in Zootaxa 5405 (2)</i> on pages 235-237, DOI: 10.11646/zootaxa.5405.2.4, <a href="http://zenodo.org/record/10603343">http://zenodo.org/record/10603343</a>
Ducetia rohinii Tiwari and Diwakar 2023, sp. n.
No full text<i>Ducetia rohinii</i> Tiwari and Diwakar sp. n. <p>(Fig. 4–5, Table 2)</p> <p> <b>Material examined.</b> <i>Holotype</i>: Male. <b>INDIA</b>, Goa, Bhagwan Mahavir Wildlife Sanctuary, 2016, ~ 840 m a.s.l. Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Goa, Bhagwan Mahavir Wildlife Sanctuary, 2016, ~ 840 m a.s.l. Coll. Chandranshu Tiwari, 2020 (2 ♁).</p> <p> <b>Type locality.</b> Bhagwan Mahavir Wildlife Sanctuary, South Goa, Goa, India.</p> <p> <b>Measurements (length in mm)</b>. Body 19.6 (2.3); tegmen 28.24 (2.07); pronotum 4.55 (0.49); pro-femur 7.17 (0.32); meso-femur 10.32 (0.82); post-femur 22.43 (1.22); pro-tibia 7.33 (1.28); meso-tibia 10.09 (0.7); post-tibia 24.66 (1.01); file 1.42 (0.10).</p> <p> <b>Distribution</b>. Crepescular. Found only in undisturbed bushes and, forest understorey. At present only known from the type locality but likely to be distributed in Western Ghats.</p> <p> <b>Seasonal Occurrence.</b> The species was recorded during the dry season following the monsoon.</p> <p> <b>Etymology.</b> This species epithet is in recognition of Prof. Rohini Balakrishnan, who laid the foundation for Orthopteran bioacoustics in India.</p> <p> <b>Differential diagnosis</b>. The species is similar to <i>D. malayana</i> (Heller 2017) but differs in smaller body size and smaller subgenital lobes. <i>D. rohinii</i> exhibited a longer tegmina compared to <i>D. malayana</i> despite the smaller body. <i>D. rohinii</i> had a significantly denser stridulatory comb compared to <i>D. malayana.</i> The two species produced a similar call pattern, however <i>D. rohinii</i> lacked the isolated syllables produced by <i>D. malayana</i> (Heller <i>et al.</i> 2017; Tiwari and Diwakar 2023).</p> <p> <b>Description.</b></p> <p> <b>Male.</b> Medium size and slender bodied. <b>Head.</b> Fastigium verticis narrow conical, dorsally furrowed, apex subacute, separated from fastigium frontis by a rectangular step. Eye ovoid, slightly bulging. <b>Pronotum</b> with disc rounded into paranota, only apical area flat and shouldered. <b>Legs.</b> Anterior coxa with a small spine. Anterior femur slightly compressed. Geniculaer lobes of all legs bispinose. Tibial tympana open on both sides. Femora with following number of spines on ventral margins: profemur 5–6 internal, 8–9 external; mesofemur 1 internal, 10–11 external; posterior femur 8–9 external, no internal. Pro- and mesotibia with 2 and 4 apical spurs respectively and following number of spines: protibia 8–9 ventro-internal, 13–14 ventro-external, 5–6 dorso-internal, 8–9 dorso external; mesotibia 14–15 ventro-internal, 7–8 ventro-external, 7–8 dorso-internal, 7–8 dorso-external. Posterior tibia with 6 apical spurs, 25–27 ventro-internal, 22–23 ventro-external, 35–37 dorso-internal, 38 dorso-external. <b>Wings.</b> Tegmina surpassing hind knee; radius sector branching pectinately before middle of tegmina. Hind wings caudate. <b>Stridulatory file</b> with 138±2 teeth (n=3), which are large and spaced in basal half, gradually becoming narrower and denser towards the apex.</p> <p> <b>Male genitalia.</b> Subgenital plate for most of its length divided into two, little curved, parallel lobes provided along inner margins with numerous minute teeth. Distal lobes contiguous. Cerci long, slender, feebly directed upwards with interno-ventral ridge.</p> <p> <b>Female:</b> Unknown. Supposed to be similar to that of <i>D. malayana.</i></p> <p> <b>Coloration:</b> Green and brown color morphs. Males with a narrow brown medial band starting from head continuing to disc of pronotum and dorsal margin of tegmen. Tegmen with little conspicuous black dots in cells. Antennae pale brown, annulated. Pro- and mid femora brown; posterior femora green with dark dots on dorsal areas, anterior tibia tympanum yellowish brown. Tibial segment brown-black in green morphs and yellow in brown morphs respectively. Tegmen appears green when alive, but is hyaline with veins and veinlets brown. Stridulatory vein brown with brownish file, cerci darkened towards tip.</p> <p> <b>Depositories.</b> The specimen are deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2023, Description of two new species of the Genus Ducetia Stål 1874 (Orthoptera: Tettigoniidae: Phaneropterinae) from India, pp. 292-300 in Zootaxa 5296 (2)</i> on pages 297-299, DOI: 10.11646/zootaxa.5296.2.10, <a href="http://zenodo.org/record/7973032">http://zenodo.org/record/7973032</a>
Euconocephalus brevicornis Tiwari and Diwakar 2024, sp. n.
No full text<i>Euconocephalus brevicornis</i> Tiwari and Diwakar sp. n. <p>(Fig. 8)</p> <p> <b>Material examined:</b> <i>Holotype</i>: Male. <b>INDIA</b>: Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l. 2017, Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l., 2017 Coll. Chandranshu Tiwari (4 ♂).</p> <p> <b>Type locality:</b> Hollangapar Gibbon Wildlife Sanctuary, Jorhat, Assam, India.</p> <p> <b>Measurements (length in mm):</b> Body 27.11 (1.9); tegmen 32.45 (2.1); fastigium 1.24 (0.21); pronotum 7.6 (0.35); fore-femora 4.98 (0.2); mid-femora 6.56 (0.3); hind-femora 19.85 (0.6); fore-tibia 5.67 (0.8); mid-tibia 6.96 (0.3); hind-tibia 19.29 (1.4); file 2.12 (0.4)</p> <p> <b>Distribution.</b> Crepescular-Nocturnal. Grasslands and fallowlands on the forest edge. In addition to type locality, the new species was also recorded by the collector in ONGC colony, Cinnamara in Jorhat.</p> <p> <b>Seasonal occurrence:</b> The species was recorded from the type locality during the post-monsoon period. <b>Etmylogoy:</b> The species epithet refers to the character of small fastigium. Latin adjective (=small horned).</p> <p> Following <i>Euconocephalus</i> in gender.</p> <p> <b>Differential diagnosis:</b> The new species is similar to <i>Euconocephalus farooqii</i> (Shah and Usmani 2022) but differs in the following traits: smaller size; fastigium shorter and with a weak median carinula, lateral carinae absent; straight stridulatory file with more than 60 teeth, fore and mid-femora dorsoventrally unarmed, supra-anal plate with obtuse apex, subgenital shorter and broader without the middle fringe, styli comparatively shorter.</p> <p> <b>Description</b></p> <p> <b>Male</b>: body small and slender. <b>Head</b>. Conical in profile; fastigium of vertex conical, slightly extending beyond the base of antennae and separated from fastigium of frons by a notch with a small ventral tubercle present at the base of fastigium, dorsal surface smooth with a weak medial carinula. Apex rounded. eyes more or less spherical. <b>Pronotum</b> dorsal lateral sulcus barely visible; posterior dorsal margin broadly rounded, anterior margin almost straight; lateral carinae absent; lateral lobes of pronotum longer than high with distinct humeral sinus. Prosternum bispinose, mesosternal and metasternal lobes more or less triangular with a longitudinal dark band in the middle.</p> <p> <b>Legs</b>. genicular lobes of fore femora spineless on both side; genicular lobes of mid femora spines on inner side with a single spine and spineless on outer side; genicular lobes of hind femora with a single spine on both inner and outer side; fore coxae with a long spine; all femora dorsally spineless, fore- and mid-femora ventrally unarmed, hind-femora ventrally armed with 7 spines on inner and 6 spines on outer margin. Tympanum on fore-tibia conchate, tympanal slits facing forward with a pair of small elongated pits laterally just below the tympanum; fore- and midtibiae dorsally spineless; fore-tibiae armed ventrally with 6 spines on outer and 4 spines on inner margin. Mid tibia armed ventrally with 7 spines on outer and 5 spines on inner margin. Hind tibia dorsally armed with 24 small spines and 25 small spines on inner and outer margin respectively, ventrally armed with 7 and 6 small spines on inner and outer margin respectively. Single dorsal pair of spurs and two ventral pairs (outer large and inner being small) of spurs present at the apical region of hind tibiae. <b>Wings.</b> tegmina longer than hind wings but not extending beyond the hind wings; apices rounded. wings surpassing the middle of hind tibia when folded. <b>Stridulatory file</b> on the ventral side of left tegmen with 73±12 (n=5) teeth. Sulcate with slight curve, narrowing towards the distal end, medially wide.</p> <p> <b>Male genitalia.</b> Male tenth abdominal tergite with two incurved lobes on posterior margin and triangular excision between them; median carina faintly visible. Supra-anal plate with obtuse apex, subgenital shorter and broader without the middle fringe, styli comparatively shorter. Cerci thick with two incurved teeth, dorsal tooth short with long spine ventral tooth large with small spine.</p> <p> <b>Female</b>. Unknown</p> <p> <b>Coloration</b>. Both green and brown morphs. Apex of fastigium white. Antennae light colored. Sternum unicolor with a longitudinal brown band interrupted in the middle. Femora unicolor to the morph. Tibia brown in both color morphs.</p> <p> <b>Depositories:</b> The specimens are deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2024, The Orchestra Nocturne: Description For Six New Katydid Species From India (Orthoptera: Tettigoniidae), pp. 227-245 in Zootaxa 5405 (2)</i> on pages 241-243, DOI: 10.11646/zootaxa.5405.2.4, <a href="http://zenodo.org/record/10603343">http://zenodo.org/record/10603343</a>
Hexacentrus sylvanus Tiwari and Diwakar 2024, sp. n
No full text<i>Hexacentrus sylvanus</i> Tiwari and Diwakar sp. n <p>(Fig. 1)</p> <p> <b>Material examined:</b> <i>Holotype</i>: Male. <b>INDIA</b>: Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l. 2015, Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Assam, Hollangapar Gibbon Wildlife Sanctuary, Jorhat ~ 120 m a.s.l., 2021 Coll. Chandranshu Tiwari (2 ♂).</p> <p> <b>Type locality.</b> Hollangapar Gibbon Wildlife Sanctuary, Jorhat, Assam, India.</p> <p> <b>Measurements (length in mm):</b> Body 26.67 (4.65); tegmen 31.95 (1.24); pronotum 8.13 (1.48); fore-femora 8.35 (1.11); mid-femora 8.57 (1.42); hind-femora 21.25 (3.53); fore-tibia 9.61 (2.79); mid-tibia 9.33 (2.39); hind-tibia 22.34 (1.77); file 2.1 (0.0).</p> <p> <b>Distribution:</b> Nocturnal. Found only in the dense understorey. In addition to the type locality, the new species was also recorded by the collector in ONGC colony, Cinnamara in Jorhat. The species is likely to be distributed in North-East Himalayas.</p> <p> <b>Seasonal occurrence:</b> The species was recorded from the type locality during monsoon and wet post-monsoon period.</p> <p> <b>Etymology:</b> The specific epithet reflects habitat of the species. Latin adjective (=of the forest), following <i>Hexacentrus</i> in gender.</p> <p> <b>Differential diagnosis:</b> The new species is similar to <i>Hexacentrus japonicus</i> (Karny 1907) but differs in the following characters: Stridulatory file with 4 large teeth in the middle, Subgenital plate long with elongated, wide, longitudinal median furrow, lateral ridges well developed, apical margin with rounded excision; with styles curved, converging apically. The two species can also be differentiated by their calls, <i>H. japonicus</i> produces distinct amplitude modulated chirps whereas <i>H. sylvanus</i> produces a continuous buzz (Ingaki <i>et al.</i> 1986; as <i>Hexacentus sp.</i> 1 in Tiwari and Diwakar 2023a)</p> <p> <b>Description:</b></p> <p> <b>Male:</b> Body medium sized and slender. <b>Head:</b> antennae with alternate short dark bands apically. Fastigium of vertex triangular, narrow; compressed laterally with a longitudinal median sulcus; apex obtusely rounded. Fastigium of vertex separated from the fastigium of frons by a furrow. Median ocellus well developed. Eyes are globular. <b>Pronotum</b> saddle-shaped, dorsal region longer than wide and expanded on posterior region. Slightly depressed behind first transverse sulcus; with three transverse sulci, second and third ones restricted to disc, a U-shaped sulcus is present between second and third transverse sulci anterior dorsal margin slightly concave, with slight median excision. An hour glass shaped band covers the whole pronotum; median carina faintly visible. Pronotal disc flat, expanded, broadly rounded and highly rugose on posterior region; lateral lobes of pronotum inclined; longer than high. Prosternum armed with two long, cylindrical spines; mesosternum and metasternum armed with a pair of short and thick sternite. Thoracic auditory spiracle large, oval, slightly hidden under the lateral lobe of pronotum with a tubercle at midanterior edge. <b>Legs</b>: genicular lobes of fore femora armed with a single spine on inner side and unarmed on outer side, mid and hind genicular lobes armed with bispinose on both inner and outer side. Fore coxae with a forward outward projecting spine. Fore-femora and mid femora armed with 2 spines, Hind femora ventrally armed with 9–10 spines each on inner and outer margin. Fore tibiae dorsally unarmed. Fore tibiae ventrally armed with 5 long, movable, outwardly bowed opposing spines decreasing in length from basally to apically each on inner margin and outer margin. Mid tibia dorsally with 2 spines on inner margin only, ventrally armed with 6 long, movable, outwardly bowed opposing spines decreasing in length from basally to apically each on inner and outer margin. Hind tibiae dorsally armed with 15 spines on inner and outer margin. Hind tibiae ventrally armed with 30–31 spines increasing in length and density from basally to apically on inner margin. Single dorsal pair of spurs and two ventral pairs (inner small and outer large) of spurs present on the apical region of hind tibiae. <b>Wings</b>. Tegmina longer than hind wings. Tegmina reaching the middle of hind tibiae. Male tegmina broad at the middle. <b>Stridulatory file</b> with 27 teeth (n=3), including four large teeth in the middle, file moderately sulcate, gradually narrowing at distal end, abruptly narrowing with few teeth towards proximal end.</p> <p> <b>Male genetalia.</b> Subgenital plate long with median longitudinal furrow apically, lateral ridges well developed, apical margin with rounded excision; styles diverging basally, apex slightly incurved. Cerci robust, apical third narrowed and curved inwards; apex pointed.</p> <p> <b>Female:</b> unknown. Supposed to be similar to that of <i>H. japonicus.</i></p> <p> <b>Coloration:</b> Green to greenish yellow when alive. Antennae with yellow brown with regularly spaced dark annules. Occiput and vertex bearing thick rusty brown stripe covering most of the head in dorsal view. Pronotum dorsal disc bearing rusty brown stripe similar in width as of head up to half the length, much widened posteriorly. Tegmen appears green/yellow when alive, but is hyaline with veins and veinlets brown. Male tegmen with stridulatory apparatus and apical field rusty brown, lateral part venation brown.</p> <p> <b>Depositories:</b> The specimen are deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2024, The Orchestra Nocturne: Description For Six New Katydid Species From India (Orthoptera: Tettigoniidae), pp. 227-245 in Zootaxa 5405 (2)</i> on pages 229-231, DOI: 10.11646/zootaxa.5405.2.4, <a href="http://zenodo.org/record/10603343">http://zenodo.org/record/10603343</a>
Euconocephalus malabaricum Tiwari and Diwakar 2024, sp. n.
No full text<i>Euconocephalus malabaricum</i> Tiwari and Diwakar sp. n. <p>(Figs. 5–6)</p> <p> <b>Material examined:</b> <i>Holotype</i>: Male. <b>INDIA.</b> Kerala, Varnam P.O. Puthanangady, Cherthala, Alleppey. ~ 2 m a.s.l. 2020, Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Kerala, Varnam P.O. Puthanangady, Cherthala, Alleppey. ~ 2 m a.s.l. 2020, Coll. Chandranshu Tiwari (2 ♂).</p> <p> <b>Type locality:</b> Varnam P.O. Puthanangady, Cherthala, Alleppey Kerela.</p> <p> <b>Measurements:</b> Body 33.1 (1.3); tegmen 40.3 (3.6); fastigium 2.0 (0.4); pronotum 8.1 (0.9), fore-femora 5.7 (0.7); mid-femora 7.3 (0.3); post-femora 20.1 (1.7); fore-tibia 6.1 (0.4); mid-tibia 7.0 (0.2); post-tibia 20.4 (0.3), file 2.6 (0.2).</p> <p> <b>Distribution:</b> Crepescular-Nocturnal. Recorded from rice fields and fallow lands. Likely distributed throughout the Malabar coast.</p> <p> <b>Seasonal occurrence</b>: The species was recorded during the dry season preceding the monsoon.</p> <p> <b>Etymology:</b> The species is named after Malabar coast where it was recorded from. Adjective following <i>Euconocephalus</i> in neuter.</p> <p> <b>Differential diagnosis:</b> The species is similar to <i>Euconocephalus incertus</i> (Walker 1869) but differs in the following character: shorter fastigium, tegmen, and apex of supra-anal plate obtuse. Subgenital plate smaller without the lateral ridges.</p> <p> <b>Description:</b></p> <p> <b>Male:</b> Body slender. <b>Head.</b> Fastigium of vertex conical, elongate 2.0 mm in length, apex rounded. Fastigium of vertex separated from fastigium of frons by a notch with a small ventral tubercle present at the base of fastigium. Eyes suboval and prominent. <b>Pronotum</b> with anterior dorsal margin almost straight, posterior margin broadly rounded; transverse sulcus distinct before the middle of pronotum; lateral carinae present. Lateral lobes of pronotum inclined; longer than high with distinct humeral sinus. Prosternum armed with a pair of spines, mesosternal and metasternal lobes triangular. <b>Legs</b> genicular lobes of fore femora unarmed on both side; genicular lobes of mid femora armed on the inner side with a single spine and unarmed on outer side; genicular lobes of hind femora armed with a single spine on both inner and outer side. Fore coxae armed with a long projected spine.All femora dorsally unarmed. Fore femora ventrally armed with 2 minute spines on inner margin and unarmed on outer margin. Mid femora ventrally unarmed on outer margin and 3 minute spines on inner margin. Hind femora ventrally armed with 9 minute to small spines on inner margin and 7 minute to small spines on outer margin. Tympanum on fore tibia conchate, tympanal slits facing forward with a pair of small elongated pits laterally just below the tympanum. Fore and mid tibiae dorsally unarmed. Fore tibiae ventrally armed with 6 small spines each on inner and outer margin. Mid tibiae ventrally armed with 7 small spines each on inner and outer margin. Hind tibiae dorsally armed with 15 small sized spines on inner and 19 spines on outer margin. Hind tibiae ventrally armed with 9 small spines on inner margin and 17 small more spaced spines on outer margin. Single dorsal pair of spurs and two ventral pairs (inner small and outer large) of spurs present at the apical region of hind tibiae. Male tenth abdominal tergite with two incurved lobes on apical margin. <b>Wings.</b> Tegmina longer than hind wings but not extending beyond the hind wings; apices obtusely rounded. Wings reaching beyond the middle of hind tibia when folded. Hind wings pellucid. <b>Stridulatory file</b> with 76 teeth on the ventral side of left tegmen; file slightly curved. relatively narrow on distal end than the proximal end.</p> <p> <b>Male genitalia.</b> Supra-anal plate triangular with dorsal basal groove, apex obtuse. Subgenital plate broad with well developed medial ridge. Apical margin with triangular excision; styles conical and short. Cerci thick with two incurved apical teeth, dorsal tooth shorter than ventral tooth.</p> <p> <b>Female</b>. Unknown. Supposedly similar to <i>E.incertus.</i></p> <p> <b>Coloration</b>. Green to Yellow Green when alive. Antennae yellow to pale green. Lateral margin of fastigium of vertex on both sides with narrow yellow band which extends on the vertex above eye level and reaching up to the posterior margin of pronotum. Tegmen appears green/yellow when live with anterior external margin of the tegmen pale or translucent. All femora same color as tegmen. Tibia pale yellow to white. Claws and tarsal joints pale.</p> <p> <b>Depositories:</b> The specimens are deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p> <p> <b>Acoustic Description</b></p> <p> The call of <i>E. malabaricum</i> consists of a buzzing call typical to Conocephalinae family, with a two part echeme (SD=4±1 ms) produced at a very high rate (209±37 echeme/s). The call had the peak frequency of 12 kHz and a bandwidth of 7±1.5 kHz (Figure 6).</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2024, The Orchestra Nocturne: Description For Six New Katydid Species From India (Orthoptera: Tettigoniidae), pp. 227-245 in Zootaxa 5405 (2)</i> on pages 237-239, DOI: 10.11646/zootaxa.5405.2.4, <a href="http://zenodo.org/record/10603343">http://zenodo.org/record/10603343</a>
Euconocephalus latipennis Tiwari and Diwakar 2024, sp. n.
No full text<i>Euconocephalus latipennis</i> Tiwari and Diwakar sp. n. <p>(Fig. 7)</p> <p> <b>Material examined:</b> <i>Holotype</i>: Male. <b>INDIA.</b> Arunachal Pradesh, Namdapha Tiger Reserve, Changlang district ~ 796 m a.s.l. 2017 Coll. Chandranshu Tiwari, Department of Environmental Studies, University of Delhi, 110007 (Delhi), India. <i>Paratype:</i> Arunachal Pradesh, Namdapha Tiger Reserve, Changlang district ~ 796 m a.s.l. (2 ♂).</p> <p> <b>Type locality:</b> Namdapha Tiger Reserve, Arunachal Pradesh. India.</p> <p> <b>Measurements (length in mm):</b> Body 31.48 (0.8); tegmen 43.26 (0.5); fastigium 1.21 (0.23); pronotum 8.42 (0.38), fore-femora 6.42 (0.3); mid-femora 7.79 (0.5); hind-femora 25.7 (0.3); fore-tibia 7.0 (0.2); mid-tibia 8.85 (0.1); hind-tibia 24.88 (0.7), file 2.52 (0.1).</p> <p> <b>Distribution:</b> Nocturnal. Found only in the dense understorey. The species is currently known only from its type locality.</p> <p> <b>Seasonal occurrence:</b> The species was recorded from the type locality during the early monsoon.</p> <p> <b>Etymology:</b> The species epithet refers to the character truncated tegmen. Latin adjective (=wide wing). Following <i>Euconocephalus</i> in gender.</p> <p> <b>Differential diagnosis:</b> The new species is allied to <i>Euconocephalus budaunensis</i> (Farooqi and Usmani 2018a) but differs in the following characters: smaller size; shorter fastigium, truncated apices of tegmen and a denser stridulatory file.</p> <p> <b>Description:</b></p> <p> <b>Male:</b> Body slender. <b>Head.</b> fastigium of vertex conical, short and blunt. Fastigium separated from frons by a notch with a small ventral tubercle present at the base of fastigium. Eyes suboval and prominent. <b>Pronotum</b>: anterior dorsal margin concave, posterior margin rounded; transverse sulcus distinct before the middle of pronotum; lateral carinae of pronotum absent. Lateral lobes of pronotum longer than high; humeral sinus distinct. Prosternum armed with a pair of spines, mesosternal and metasternal lobes triangular. Prosternum armed with a pair of spines, mesosternal and metasternal lobes triangular. <b>Legs</b>: genicular lobes of fore femora unarmed on both sides; mid genicular lobes armed by a single spine on inner side and unarmed on outer side, hind genicular lobes armed by a single spine on both sides.All femora dorsally unarmed. Pro femora with a small spine on the inner margin ventrally. Mid femora ventrally unarmed on inner margin and 3 minute spines on outer margin. Hind femora ventrally armed with 15 small spines on inner margin and 12 small spines on outer margin. Fore and mid tibiae dorsally unarmed. Tympanum on fore tibia conchate, tympanal slits facing forward with a pair of small elongated pits laterally just below the tympanum. Fore tibiae ventrally armed with 6 small spines each on inner margin and outer margin. Hind tibiae dorsally armed with 15 small spines each on inner margin and outer margin. Hind tibiae ventrally armed by 21 small spines on inner margin and 23 small spines on outer margin. Single dorsal pair of spurs and two ventral pairs (inner small and outer large) of spurs present on the apical region of hind tibiae. <b>Wings.</b> Tegmina longer than hind wings but not extending beyond the hind wing; apices truncated; Wings reaching beyond the middle of hind tibiae when folded. Tegmen on two third of the radial field, decorated with blackish spots. Hind wings pellucid. <b>Stridulatory file.</b> 126±4 teeth (n=3) file sulcate, almost straight, slightly elevated before the middle on proximal side; extremely dense in the middle narrow on both proximal and distal end.</p> <p> <b>Male genitalia.</b> Male tenth abdominal tergite with two incurved lobes on posterior margin and triangular excision between them; median carina faintly visible. Supra-anal plate triangular with dorsal longitudinal groove. Subgenital plate long, lateral ridges well developed, middle ridge weakly developed, basal V shaped ridge not visible, apical magin with triangular excision; styli conical, short; apex sub obtuse; converging apically. Cerci thick with two incurved teeth, dorsal tooth short with long spine ventral tooth large with small spine.</p> <p> <b>Female</b>. Unknown</p> <p> <b>Coloration</b>. Dark green when alive. Apex of fastigium white. Antennae brown with short dark bands apically. Tegmen appears green when live with dark spots in radial field, but is hyaline with veins and brownish spots. fore femora light brown, mid and hind femora dark green. All tibia dark brown.</p> <p> <b>Depositories:</b> The specimens are deposited in the Department of Environmental Studies, Faculty of Science, University of Delhi.</p>Published as part of <i>Tiwari, Chandranshu & Diwakar, Swati, 2024, The Orchestra Nocturne: Description For Six New Katydid Species From India (Orthoptera: Tettigoniidae), pp. 227-245 in Zootaxa 5405 (2)</i> on pages 239-241, DOI: 10.11646/zootaxa.5405.2.4, <a href="http://zenodo.org/record/10603343">http://zenodo.org/record/10603343</a>
Impatiens jurpia var. ravikumareana Tiwari, U. L. 2022, var. nov.
No full textImpatiens jurpia var. ravikumareana Tiwari, U.L. var. nov. (Fig. 1 & 2) Type:— INDIA. Arunachal Pradesh: East Kameng District, on way to Sangchu sollung basti from Chiyang Tajo, 27˚41̍̍05.6̎N, 92˚09̍05.2̎E, 1524m, 29 September 2017, Umeshkumar L. Tiwari 47801 (holotype: ARUN!, isotype: CAL!). Diagnosis: Impatiens jurpia var. ravikumareana has stem unbranched or rarely branch, young part white tomentose, not swollen nodes; inflorescence monochasial cyme, peduncle hairy at base and glabrous above; flowers yellow flushed with red; lateral sepal 2 mm long; lower sepal spur straight and twisted upward, reddish yellow, apex bifurcate (differ from Impatiens jurpia var. jurpia (1859: 140) has unbranched stem, young branch glabrous, nodes swollen; inflorescence pedunculate raceme, peduncle pubescent; flowers purple or pink or yellow; lateral sepal 5 mm long; lower sepal spur incurved, apex sometimes slightly swollen and bifid, glabrous). Description: Annual non succulent herb, rarely branched up to 40 cm tall. Stem terete, slightly ridged, without swollen nodes, hairy, purplish red, young shoots and leaves brown tomentulose. Leaves alternate; 3–4 mostly confined to upper parts of stem, petiole 1.0– 4.5 cm long, hairy white with 3–4 pelted glands, exstipulate; lamina oblong ovate, 8–12 × 3–5 cm, base cuneate, oblique, apex acuminate, margin shallowly crenate, setose between teeth, thinly papery, ventrally pubescent along nerves and dark green; lateral veins 5–7 pairs. Inflorescences in leaf axils, monochasial cyme, 2-flowered or rarely 3; peduncle 3–5 cm long, hairy at base and glabrous above, bud yellow with red, glabrous. Pedicel 1.4–1.6 cm long, green, glabrous; bracts 1 × 2 mm long, ovate, acute apex with gland tipped, mid vein not prominent, green, glabrous on both surfaces, persistent. Flower 2.5–3.0 × 3.2–4.1 cm, yellow. Lateral sepals 2, ca. 1 × ca. 2 mm long, ovate, apex acute, margin entire, greenish, glabrous. Lower sepals yellow, bucciniform, 2.8–3.0 × 1.3–1.8 cm with red lines inside; mouth beaked, ca. 1 mm long; spur straight and twisted upward, 1.1–1.4 cm long, reddish yellow, apex bifurcate or emarginate, glabrous. Dorsal petals 1.7–2.0 × 1.5–1.7 cm, obcordate to suborbicular, yellow with red, apex non beaked, dorsally with prominent horn, ca. 7 mm long, red. Lateral united petals 2, 2.5–2.6 cm long (whole), yellow; basal lobe 1.4–1.5 × 0.5–0.6 cm long, obovate, apex obtuse; distal lobes dolabriform, 1.0–1.2 × 2.2–2.3 cm long, apex rounded-obtuse; auricle oblong, 3 × 3 mm long, twisted upward, yellow. Stamens 5, united upright, ca. 4 mm tall, anther lobes obtuse. Ovary glabrous, fusiform, apex acute. Capsule clavate (immature), green. Seeds many. Phenology. September–October. Etymology. The Varity epithet is in dedication to “Dr. K. Ravikumar” who had established National Herbarium of Medicinal Plants used in Indian System of Medicine and also establish Raw Drug Repository of Natural Resources used in Indian Systems of Medicine at The University of Trans disciplinary health sciences and Technology, Bengaluru, India formerly known as FRLHT. Distribution and Ecology. Endemic to Arunachal Pradesh. The variety is only known from Chiyang Tajo of East Kameng district. Observations showed that there were less than 20 mature individuals restricted to 2 km 2 forest areas along stream. Impatiens jurpia var. ravikumareana grows in moist place near the water fall and streams on rocky slopes with little soil at an elevation of 1650–1800 m. along with Elatostema sessile J.R. Forst. & G. Forst. (1776: 106), Impatiens arguta Hook. f. & Thom. (1859: 137), Lecanthus peduncularis (Wall. ex Royle, 1839: 83, f. 2) Wedd. (1869: 164), Pilea medogensis C.J. Chen (1982: 109), Tricarpelema glanduliferum (J. Joseph & R.S. Rao, 1969: 367) Faden (1991: 153), Selaginella tamariscina (P. Beauv., 1804: 483) Spring (1843: 136).Published as part of Tiwari, Umeshkumar L., 2022, A new variety of Impatiens jurpia (Balsaminaceae) from Arunachal Pradesh, India, pp. 280-286 in Phytotaxa 530 (3) on pages 280-283, DOI: 10.11646/phytotaxa.530.3.3, http://zenodo.org/record/583595
Chrysopogon densipaniculatus Landge & A. P. Tiwari 2022, sp. nov.
No full textChrysopogon densipaniculatus Landge & A.P.Tiwari, sp. nov. (Figs. 1 & 2) Diagnosis:—It is a very distinct species, may easily be distinguished by the presence of transverse glandular patches on the laterally compressed peduncle; very dense panicle inflorescence i.e. 15 × 8.0 (–10) cm; 35–76 racemes from the lower nodes on rhachis; rhachis terminally divided; leaf blades ca. 90 × 2.0 cm, indistinct from the sheath (quite continuous); sheaths distinctly terete not keeled; lemma and palea in the pedicelled spikelet bi-dentate to tridentate, the latter of which is reduced to a minute scale, ca. 1.0 mm long. Type:— INDIA. Chhattisgarh, Korba district, Chaiturgarh hills, 22°30’ 50.1” N lat. and 82°16’ 41.5” E long., ca. 898 m above sea level, 11 November 2019, A. P . Tiwari 21 (holotype: BLAT; isotype: BLAT). Description Perennial, tall, glaucous, unbranched (if branched then sparsely), robust herb. Culms glabrous, erect, not ascending, 150–210 cm high, as thick as a little finger at the base, terete; cataphylls at base several and woody, ovate-lanceolate, 2.0– 2.3 cm long, glabrous, vernicose, pungent, ribbed, laterally compressed and convex on the back. Sheath glabrous, tightly clasping the culm, longer than the internodes (at least the basal one) upper ones shorter, keel-less (terete), ribbed, indistinct from the blade, 10–17 cm long. Ligule reduced to a minute rim of dense white hairs, up to 0.8 mm long. Blades oblong-lanceolate, ca. 90 × 2.0 cm, glaucous, glabrous, scabrous, margin minutely pectinate, multinerved (up to 24 nerves), apex acuminate, mid-nerve prominently broad, pale yellowish, dilated base-wards, base broad, sub-cordate at the base. Inflorescence a pyramidal dense panicle, congested, with 35–76 spiciform-racemes on each node along the tough, inarticulate rhachis (central axis); rhachis consists of up to 12 nodes, terminally divided into 1–3 secondary branches bearing few racemes; peduncle laterally compressed, flexuous, scabrid, sometimes with distinct glandular bands in long discrete patches; panicle up to 15 cm long and 8 (–10) cm wide when spread (broadest at/near the base). Raceme consists of triad of spikelets in which one is sessile (hermaphrodite) and two pedicelled (barren or staminate) on a long, slender, scaberulous, rhachis internode up to 0.5–5.3 (–6.0) cm long (tip, when raceme disarticulates, is somewhat swollen, oblique, excavated and bearded with brownish hairs); few racemes at the lowest node are either reduced or depauperate, but distinctly hairy. Sessile spikelet: ca. 6.0 mm long (excluding a pungent callus ca. 1.0 mm long with dark brown hairs), laterally compressed, hermaphrodite; lower glume ca. 5.0 × 1.2 mm (spread out), oblong-elliptic, broader little above the middle, laterally compressed, slightly keeled but mostly rounded, apex acute, somewhat setose downwards, somewhat herbaceous, 4-nerved (green), margin hyaline, ciliolate (hairs caducous), surface scabrous; upper glume ca. 6.0 × 2.3 mm (spread out), elliptic, laterally compressed, curved, subcoriaceous on the obtuse keel broader near the base, sparsely hairy (hairs not brownish) in the middle or not, 1-nerved on either side of a keel, ciliolate, scabrous, setaceous near the tip and somewhat over the arista with white hairs (arista ca. 7.0 mm long) but near the base only, awn slender, scaberulous not twisted; lower lemma equal to the lower glume, elliptic, epaleate, barren, hyaline, membranous, 2-nerved, margin ciliate, tip acute; upper lemma linear 4.5–5.0 mm long, epaleate, distinctly bi-lobed, glabrous, hyaline-membranous with a geniculate awn issuing from the sinus, ca. 26 mm long (column puberulous 8.0–9.0 mm long (brownish) and bristle scaberulous 15–17 mm long (pale yellow)); stamens 3, anthers 3.0– 3.2 mm long, orangish (when dried); stigma densely plumose, laterally exserted from below the middle in the sessile spikelet; caryopsis not seen. Pedicelled spikelet equal to the sessile, ca. 6.0 mm long, sparsely hairy, scabrid, awned, staminate or barren; pedicel flattened, 2.0– 2.2 mm long (confluent into the callus of the sessile spikelet), less than half as long as the sessile spikelet, ciliate on both the angles with brownish hairs (hairs towards the apex reaching 4.0 mm in length and reduce downwards); lower glume ca. 6.0 × 1.8 mm, elliptic, broadest little below the middle, aristate (3.0–5.0 mm long, scaberulous, pale yellow), herbaceous, membranous, 7-nerved (green) evanescent downwards, hairy and scabrous on the dorsal side, slightly purplish; upper glume ca. 5.5 × 1.8 mm, elliptic, acute, sub-hyaline-membranous, 3-nerved, margin ciliate, inflexed, rounded on the keels, with a slight tinge of purple; lower lemma ca. 5.5 × 1.1–1.2 mm, oblong-elliptic, acute, epaleate, barren, hyaline-membranous, 2-nerved, margin hairy; upper floret staminate; upper lemma ca. 5.0 × 1.0 mm, oblong-sub-elliptic, paleate, staminate, margin ciliate, hyaline, membranous, distinctly 1-nerved, tip bifid (lobes ca. 0.5 mm long), lobes acute ciliolate or glabrous; palea ca. 0.7–1.0 mm long, oblong or somewhat elliptic or not, nerveless, glabrous, apex acute to bidentate or irregularly tridentate, hyaline tiny reduced scale; stamens 3, anthers 3.0– 3.5 mm long. Etymology:—The epithet “ densipaniculatus ” alludes to the nature of highly dense panicle inflorescence. Distribution:— Chhattisgarh, Korba district, Chaiturgarh hills, India. Hitherto, it is the only locality where this species occurs, apparently endemic to the region. Habitats and associated species:—In dry sal forest on rocky hill slopes at an altitude of 898 m. where it grows along with other grass species, such as: Apluda mutica Linnaeus (1753: 82), Capillipedium assimile (Steudel 1855: 397) Camus (1922: 314), Heteropogon contortus (Linnaeus 1753: 1045) Beauvois ex Roemer & Schultes (1817: 836), Indochloa clarkei (Hackel 1891: 49) Bor (1954: 76), Oplismenus compositus (Linnaeus 1753: 57) P. Beauvois (1812:54) and Panicum notatum Retzius (1786: 18). Flowering & Fruiting:—October to December. Conservation Status:—Hitherto, Chrysopogon densipaniculatus is only known from the type locality where about 50 mature individuals were observed. The species is confined to an area of less than 5.0 km 2 on rocky hills of Chaiturgarh which are prone to local tourism and grazing. Since, the population is located on the roadside and regular movement of the vehicles may cause a serious disturbance in the habitats and which is capable of making the population vulnerable to destruction. According to IUCN (2016) criteria the species is classified as Critically Endangered (CR), based on the criteria B2b (i,ii,iii) and D. Nevertheless, further explorations and studies are required to ascertain its current status. Note:—It can be easily segregated from the other species of Chrysopogon in transverse-glandular bands on the peduncle, 35–76 racemes emerging from the lower nodes of central axis of the panicle. Moreover, the character of bifid upper lemma and acute to bidentate or tridentate reduced palea of pedicelled spikelet are quite unique features may be reported first time in the genus. The central axis of the panicle is terminally further divided into 2 to 3 secondary branches or rhachises (each branch comprises 1 to 2 nodes) that in turn bear racemes in the whorls. Sometimes these secondary branches bear only 2 racemes on highly reduced rhachis internodes, appearing almost sessile. For the detailed comparison with an allied species, refer to (TABLE 1).Published as part of Tiwari, Arjun Prasad & Landge, Shahid Nawaz, 2022, Chrysopogon densipaniculatus (Poaceae: Andropogoneae): a new species from India, pp. 241-248 in Phytotaxa 538 (3) on pages 242-245, DOI: 10.11646/phytotaxa.538.3.7, http://zenodo.org/record/633680
- …
