24,812 research outputs found
Annamocalamus H. N. Nguyen, N., gen.
No full textAnnamocalamus H. N. Nguyen, N.-H. Xia &V. T. Tran, gen.nov. Type species: A. kontumensis H. N. Nguyen, N. -H. Xia & V. T. Tran Genus nova habitu Melocanna, Stapletonia similis, sed rhizomatis sympodialibus, rhizomemate brevi collo, inflorrescentilis iterauctantilus, pseudospiculae ad convivia in foliis nodorum distal ramis florentibus, glumis 3, stigmatibus 3 differt. Densely tufted with rhizomes short necked, pachymorph. Culms erect, when young densely covered with appressed white hairs, becoming rough when old due to silica; culms walls thin; nodes slight swollen. Branches a cluster of slender subequal branches, none dominant, these branching further. Culm sheaths persistent, greenish brown, rough, when young covered with densely appressed purple-brown bristle on the abaxial surface, margins dense purple-brown hairs; blade tardily deciduous, triangular, erected, base black-brown when young and produced upwards into rounded, abaxial dense white powder, margins dense cilia, adaxilly dense hairs at the base; auricles. Leaf blades oblong-obovate, base broadly cuneate, margins and adaxilly surface dense white cilia; leaf sheaths dense white cilia, auricles. Inflorescence iterauctant, bracteaete, pseudospikelets in groups at the distal nodes on leafless flowering branches; 1 fertile floret, glumes 3, apex acute, mucronate, margins shortly white-hispid, abaxial surface sparse white cilia; lemma oblong-lanceolate, apex acute, mucronate, convolute and covering most of the palea, margins dense white cilia; palea oblong-lanceolate, strongly involutes, sparse white cilia, apex bifid, with a narrow groove on the back (at the base rachilla is joined); lodicules 3; stamens 6, filaments free, apex obtuse; style long; stigmas 3, plumose; ovary glabrous, shortly stalked. Pericarp thick, apple shaped, fleshy, globose. Etymology. – The specific epithet refers to Annamite range (Truong Son Range of Central Vietnam, where the species is located, calamus: reed). Notes. – This remarkable genus is similar to Melocanna and Stapletonia in general appearance, but can be distinguished by the short necked rhizomes (vs long necked rhizomes in Melocanna or with extended necks in Stapletonia), pseudospikelets grouped at the distal nodes on leafless flowering branches (vs slightly compressed bilaterally on terminal leafy branches in Melocanna or large densely glomerate heads on terminal leafy branches in Stapletonia) and a long style with 3 stigmas (vs 2 to 4 or 2). The complete list of distinctive characters are summarized in Table 1.Published as part of Tran, Van Tien, Nguyen, Hoang Nghia & Xia, Nian-He, 2013, Annamocalamus H. N. Nguyen, N. - H. Xia & V. T. Tran, a new genus of bamboo (Poaceae) from Vietnam, pp. 159-165 in Candollea 68 (1) on pages 160-161, DOI: 10.15553/c2013v681a23, http://zenodo.org/record/574705
Polypheretima mekongmontis Nguyen, Tran & Nguyen 2014
No full textPolypheretima mekongmontis Nguyen, Tran & Nguyen, 2014 (Figure 14) Polypheretima mekongmontis Nguyen, Tran & Nguyen, 2014: 118, fig. 6. *: Information obtained from Omodeo (1957) Material examined 45 matures (CTU-EW 028.04) Hon Tre Island (09°58 ʹ 33 ʹʹ N, 104°51 ʹ 19.3 ʹʹ E), Kien Hai Distrist, Kien Giang Province, 14 November 2013, coll. Kim-Binh T. Trinh. Diagnosis Body cylindrical, medium size, length 82–91 mm, diameter 3.2–3.7 mm, 103–150 segments. Prostomium prolobous. First dorsal pore in 12/13. Setal number 31–39 in viii, 42–53 in xxx, 5–7 between male porophores in xviii; setal distance aa> ab, zz> zy. Spermathecal pores multiple, in ventrolateral intersegments 4/5/6/7. Male pores located inside copulatory pouches in xviii. No genital markings in the spermathecal region, but two pairs in xvii and xix. Testis sacs separated. Holandric. Intestinal caeca absent. Septa 8/9/10 absent. Habitats The species was found in soils in which long-term trees are planted. Remarks The species was recently described from Hon Dat Mountain in the mainland of Kien Giang Province. It is recorded in Hon Tre Island for first time.Published as part of Nguyen, Tung T., Trinh, Kim-Binh T., Nguyen, Hong-Lan T. & Nguyen, Anh D., 2017, Earthworms (Annelida: Oligochaeta) from islands of Kien Hai District, Kien Giang Province, Vietnam, with descriptions of two new species and one subspecies, pp. 883-915 in Journal of Natural History 51 (15 - 16) on pages 902-904, DOI: 10.1080/00222933.2017.1294213, http://zenodo.org/record/518088
Eumenes congnatus Nguyen, sp. nov.
No full textEumenes congnatus Nguyen, sp. nov. (Figs 7–12) Material examined. Holotype, ♀, “ VIETNAM, Tuyen Quang, Bac Vang Ranger Station, Na Hang Natural Reserve, Na Hang, 22 ° 20 ' 52.6 "N 105 ° 25 ' 49 "E, 10.VI. 2015, LTP Nguyen, DD nguyen & LX Truong [IEBR]. Paratypes: VIETNAM: Ha Giang: 1 ♂, Tung Ba, Vi Xuyen, 3.vii. 2013, TV Nguyen; Bac Kan: 1 ♀, Lang San, Na Ri, 21 0 15 ’N, 106 0 06’E, 270 m, 3-4.viii. 2012, J Kojima, H Nugroho & IED-c; Thai Nguyen: 1 ♂, Xom O, Yen Lac, Phu Luong, 2.vi. 2014, LTP Nguyen; Son La: Lang Son: 1 ♀, Cai Kinh, xi. 2015, LTP Nguyen, DD Nguyen & NT Tran; Son La: 1 ♀, Nam Pam, Muong La, 660 m, 25.vii. 2009, LTP Nguyen, PH Pham & J Kojima; Vinh Phuc: 1 ♂, Tam Dao NP, 21 0 26 ’N, 105 0 37 ’E, 400 m, 20.viii. 2005, J Kojima; Ha Noi: 1 ♂, Suoi Mo, Yen Bai, Ba Vi, 01.vi. 2001, LTP Nguyen Hai Duong: 1 ♀, Hoang Hoa Tham, Chi Linh, 19.viii. 2012, O.T. Nguyen [IEBR]; Lang Son: 3 ♂, Cai Kinh, Huu Lung, 22 ° 39 ' 42.9 "N, 106 ° 15 ' 36 "E, 28 m, 24.xi. 2015, LTP Nguyen, DD Nguyen, NT Tran; Thanh Hoa: 1 ♂, Xuan Lien NR, Hon Can, Van Xuan, Thuong Xuan, 19052 ’ 27.5 ”N, 105014 ’ 20.8 ”E, 106 m, LTP Nguyen; Nguyen; Nghe An: 1 ♀, Pu Mat NP, 26.vii. 2004, LTP Nguyen [VNMN]. Description. Female. Body length 11–12 mm (holotype 11.5 mm); fore wing length 10–11 mm (holotype 10.5 mm). Structure as in Eumenes longus sp. nov., but differs as follows. Head in frontal view slightly wider than high (Fig. 7). Distance between inner eye margins (frontal view) at vertex twice more than at clypeus. Clypeus nearly 1.8 × as highas wide (Fig. 7). Metasomal segment 1 in dorsal view gradually widened from base to apex (Fig. 9), tergum and sternum fused, suture between them distinct almost throughout basal part. T 2 in lateral view as long as wide (Fig. 8). Body with slightly less coarse punctures than in E. longus. Color. Black, with following parts yellow: narrow band along inner eye margin extending from bottom to near ocular sinus, spot between antennal sockets, short line at vertex behind eye, short line at basal margin of dorsal pronotum, apical part of parategula and apical margin of T 1. Legs black. Propodeal valvulae dark brown. Wings dark brown, strongly infuscate, veins dark brown. Male. Body length 10–11 mm; fore wing length 9–10 mm. Structure as in female and male of E. longus but clypeus proportionally longer, in frontal view 2.3 × as long as wide, with sharper teeth (Fig. 10). F 11 propotionaly shorter than in E. longus (Fig. 11). Color as in female. Distribution. Northern Vietnam: Tuyen Quang, Ha Giang, Bac Kan, Thai Nguyen, Son La, Vinh Phuc, Ha Noi, Thanh Hoa, Nghe An. Etymology. The specific name refers to the similarity with its congener E. longus. Remarks. This species is similar to E. longus, but can be easily distinguished from the latter by having T 1 gradually widened from base to apex (gradually widened basally and then parallel in E. longus), T 2 in lateral view as long as wide (1.1 × as long as wide in E. longus), and male clypeus with sharper teeth. This species can be distinguished from two Papuan species by having clypeus nearly 1.8 × as high as wide (less than 1.3 × as high as wide in two Papuan species).Published as part of Nguyen, Lien Thi Phuong, 2016, Two new species of the genus Eumenes Latreille, 1802 (Hymenoptera: Vespidae, Eumeninae) from Vietnam, pp. 583-588 in Zootaxa 4093 (4) on pages 585-587, DOI: 10.11646/zootaxa.4093.4.11, http://zenodo.org/record/27097
Trogolaphysa beguei Nguyen & Soto-Adames 2018, n. comb.
No full textTrogolaphysa beguei (Delamare Debouteville, 1951) n. comb. Paronella beguei Delamare Debouteville 1951a: 1074, figs 5-12 (Ivory Coast); 1951b: 60, 82, 135, 166, 176, 254, 266, fig. 21 (ecology, Ivory Coast). Paronella beguei – Delamare Debouteville 1948: 309, 376, 421, nomen nudum. Dicranocentruga beguei – Mitra 2002c: 114. TYPE LOCALITY. — Le Banco, Ivory Coast. DISTRIBUTION. — Ivory Coast. REMARKS Delamare Debouteville first used the combination Paronella beguei in 1948 referring to a paronellid found together with termites. This first mention of P. beguei included neither a morphological description nor drawings and therefore it is a nomen nudum. The only other significant citations for P. beguei are those of Delamare Debouteville (1951b), concerning its ecology, and Mitra (2002c) in which the author transfers the species to the genus Dicranocentruga Wray, 1953. We assign this species to Trogolaphysa based on mucro shape, which is typical for the genus, short and bearing 4 teeth, and the relatively long antennae. Otherwise, this is a well-marked species, unique among African forms in having a distinctive color pattern (Fig. 5J) and truncate unguiculus (Fig. 5H).Published as part of Nguyen, Minh & Soto-Adames, Felipe N., 2018, Annotated checklist of Afrotropical Trogolaphysa Mills, 1938 (Hexapoda: Collembola: Paronellidae) and description of a new species from Madagascar, pp. 179-196 in Zoosystema 40 (10) on page 182, DOI: 10.5252/zoosystema2018v40a10, http://zenodo.org/record/373822
Trogolaphysa lamottei Nguyen & Soto-Adames 2018, n. comb.
No full textTrogolaphysa lamottei (Delamare Debouteville, 1950) n. comb. Paronella lamottei Delamare Debouteville, 1950b: 43 -44, figs 1-6 (Mt Nimba, Guinea). Dicranocentruga lamottei – Mitra 2002c: 114. TYPE LOCALITY. — Mt Nimba, Guinea. DISTRIBUTION. — Guinea. REMARKS This species has not been reported again since the original description. The only additional relevant citation is that by Mitra (2002c), in which he transferred it to the genus Dicranocentruga. Paronella lamottei is placed in Trogolaphysa based on the shape of the mucro and absence of manubrial spines. However, this species approaches Paronella /Trychorypha atrofasciata in the presence of relatively long antennae and in having the manubrium distinctly longer than the dens, and it ultimately may belong to that species/genus group. Paronella lamottei is characterized by a long and thin body, with relatively long antennae, which is common in cave forms but atypical for surface Trogolaphysa; body white, except for lateral margins of the mesothorax to the 1 st abdominal segment and tibiotarsi; 1 st antennal segment white, but all other segments dark blue; tenet hair relatively long and strongly spatulate; unguis with 4 inner teeth; unguiculus lanceolate; dens with two rows of spines; and mucro with 4 teeth. This species should be easy to recognize by its general habitus and color pattern (Fig. 5I).Published as part of Nguyen, Minh & Soto-Adames, Felipe N., 2018, Annotated checklist of Afrotropical Trogolaphysa Mills, 1938 (Hexapoda: Collembola: Paronellidae) and description of a new species from Madagascar, pp. 179-196 in Zoosystema 40 (10) on pages 183-184, DOI: 10.5252/zoosystema2018v40a10, http://zenodo.org/record/373822
Okinawepipona yty , Nguyen 2018
No full text<i>Okinawepipona yty</i> Nguyen, 2018 <p>Figs. 1–7</p> <p> <i>Okinawepipona yty</i> Nguyen, 2018: 592, 596 (key), female – “Y Ty, Bat Xat, Lao Cai ” (IEBR).</p> <p> The male specimens we examined are from the type locality and agree well with the description by Nguyen <i>et al</i>. (2018). As described below, the male is similar to the female both in structure and coloration except for some few characters.</p> <p> <b>Material examined.</b> VIETNAM: <b>Lao Cai:</b> 12 ♀, 16 ♁, Y Ty, Bat Xat, 22°36′29.5″N 103°37′29.6″E, alt. 1869 m, 6 May 2019, Nguyen Quang Cuong leg.; 3 ♁, Y Ty, Bat Xat, 22°37′14.5″N 103°37′25.5″E, alt. 1850 m, 15 July 2023, Nguyen Thi Phuong Lien, Nguyen Quang Cuong leg. [IEBR]</p> <p> <b>Description.</b> <i>Male</i> (Fig. 4) [female characters in square brackets]. Body length 11–12 mm; forewing length 11–12 mm. Head in frontal view subcircular, wider than high, about 1.2× as wide as high [1.1× as wide as high] (Fig. 1). Vertex without cephalic foveae [with cephalic foveae small, bearing dense pubescence, situated very close to each other, almost touching each other] (Fig. 2). Distance from posterior ocellus to apical margin of vertex nearly 1.6× distance from posterior ocellus to inner compound eye margin [more than 1.7× distance from posterior ocellus to inner compound eye margin] (Fig. 2). Gena slightly narrower than compound eye, in lateral view about 0.9× as wide as compound eye [much narrower than compound eye, in lateral view about 0.7× as wide as compound eye]. Occipital carina complete, present along entire length of gena, but dorsally somewhat weak. Inner compound eye margins strongly converging ventrally; in frontal view about 1.8× further apart from each other at vertex than at clypeus [1.3× further apart from each other at vertex than at clypeus]. Disc of clypeus in lateral view weakly convex at basal half, then straight to near apical margin; in frontal view 1.3× higher than wide [about as wide as high] (Fig. 1), with basal margin almost straight [slightly convex medially] and distinctly separated from antennal sockets; apical margin deeply emarginate medially, forming very sharp tooth on each lateral side [forming sharp tooth on each lateral side] (Fig. 1), without carina [with two faint carinae running from tooth at apical point to base direction]; width of emargination slightly greater than 1/3 width of clypeus between inner compound eye margins [width of emargination slightly less than 1/3 width of clypeus between inner compound eye margins]. Mandible with prominent teeth, second and third teeth with inner side almost straight [second and third teeth with inner side produced with round margin], fourth tooth pointed apically. Antennal scape about 3.3× as long as its maximum width [about 3.7× as long as its maximum width]; flagellomere I about 1.8× as long as wide [about 1.5× as long as wide], flagellomeres II and III slightly longer than wide [flagellomere III as wide as long], flagellomere IV as wide as long, flagellomeres V–IX wider than long, terminal flagellomere small, slightly curved, 3.5× as long as its basal width, reaching to near base of flagellomere IX when folded [terminal flagellomere bullet-shaped, as long as its basal width] (Fig. 3).</p> <p>Mesosoma, metasoma (except tergum VII and sternum VII), and body sculpture as same as in female except clypeus with dense, small, deep punctures [clypeus with dense, large, flat-bottomed punctures, each bearing silver bristle, punctures at center larger than at sides, space between punctures larger than puncture diameter]. Tergum VII and sternum VII with some small and sparse punctures come between minute punctures.</p> <p> <i>Color</i>. Black; similar to female except clypeus almost entirely yellow [large spots on upper lateral corner and a large spot on lower middle of clypeus]; head black [narrow band along inner compound eye margin extending from bottom of frons nearly to ocular sinus, large spot between antennal sockets].</p> <p> <i>Genitalia</i>. As in Figs. 5–7. Parameral spine lacking setae. Volsella flattened, spatulate, wide on inner aspect, and without setae at top (Fig. 5). Digitus knife-shaped, almost parallel at one-third from base, then gradually narrowing to top, with medium long setae on outer margin (Fig. 5). Penis valves of aedeagus long, about 1.6× as long as basal apodeme, in ventral view proximal part produced laterally into a round lobe laterally with blunt apex in inner margin apically (Fig. 6); in profile apical part produced into a round projection (Fig. 7); dorsal rod of aedeagus shorter than basal apodeme apically (Fig. 7).</p> <p> <b>Distribution.</b> Vietnam (Lao Cai).</p>Published as part of <i>Nguyen, Hieu Van, Nguyen, Manh Thanh & Nguyen, Lien Thi Phuong, 2024, Discovery of the male of Okinawepipona yty Nguyen, 2018 (Hymenoptera: Vespidae: Eumeninae) from Vietnam, pp. 79-84 in Zootaxa 5399 (1)</i> on page 80, DOI: 10.11646/zootaxa.5399.1.6, <a href="http://zenodo.org/record/10494478">http://zenodo.org/record/10494478</a>
Metaphire planatoides Nguyen & Nguyen & Lam & Nguyen 2020, new species
No full textMetaphire planatoides, new species (Figs. 1, 4) Material examined. Holotype: 1 mature (CTU-EW.171. h01), natural forests (10°24′21.7″N, 107°16′18.2″E), Long Hai town, Long Dien District, Ba Ria-Vung Tau Province, 33 m asl, 25 October 2016, coll. Nguyen Phuc Hau. Paratypes: 2 matures (CTU-EW.171.p02), same data as holotype. Diagnosis. Small-sized worm, length 64–67 mm, average diameter 2.4–2.8 mm. Body colourless, pale, except light brown clitellum. Prostomium epilobous. First dorsal pore in 11/12. Two pairs of spermathecal pores in ventral intersegments 6/7/8. Male pores located deeply inside copulatory pouches in the setal ring xviii. Genital markings totally absent. Holandric. Intestinal caeca simple. Septa 8/9/10 absent. Description. Body cylindrical, small size, length 64–67 mm, average diameter 2.4–2.8 mm, weight 0.18–0.32 g, segments 89–96. Body colourless, pale except light brown clitellum. Prostomium 1/2 epilobous. First dorsal pore in 11/12. Preclitellar setae stouter and sparser than post-clitellar ones; setal number 39–41 in viii, 51–55 in xxx, 7–9 between two openings of copulatory pouches in xviii; setal distance aa=ab, zz=zy. Clitellum close, xiv–xvi, with only ventral setae, without dorsal pores. Female pore single, in midventral xiv. Two pairs of spermathecal pores in ventral intersegments 6/7/8. No genital markings in spermathecal region. Male pores located deeply inside copulatory pouches in the setal ring xviii. Ventral distance between two openings of copulatory pouches ca. 0.35× body circumference. No genital markings in male region. Septa 5/6/7/8 thick, 8/9/10 absent, 10/11/12/13 thin. Oesophageal gizzard within viii–ix. Intestinal origin at xv; caeca simple, paired in xxvii–xxv. Last hearts in xiii. Pharyngeal micronephridia developed in 5/6/7. Typhlosole simple, lamelliform. Lymph glands absent. Two pairs of spermathecae in vii and viii. Ampulla mangoshaped; duct small, about ⅓ ampulla length. Diverticula long, but waved and folded, directly attached to the base of ampulla duct; seminal chamber tiny, oval-shaped. Spermathecal ducts without nephridia. Accessory glands absent. Holandric. Testis sacs developed in x–xi, connected. Seminal vesicles developed in xi–xii. Ovaries developed in 12/13. Ovisacs invisible. Prostate glands deeply lobuled, paired in xvii–xx; ducts short, C-shaped. No accessory glands. Etymology. The epithet " planatoides " is used to emphasise its similarity to Metaphire planata (Gates, 1926). Remarks. Metaphire planatoides, new species, is assigned to the Metaphire planata group characterised by having two pairs of spermathecal pores in 6/7/8 and simple intestinal caeca (Sims & Easton, 1972). The planata group currently consists of at least six species, M. planata (Gates, 1926), M. decipiens (Beddard, 1912), M. dunckeri (Michaelsen, 1902), M. ferdinandi (Michaelsen, 1891), M. parvula (Ohfuchi, 1956), and M. sintangi (Michaelsen, 1922). The new species differs from these species except M. planata in the absence of genital markings in both spermathecal and male regions. Metaphire planatoides, new species, is somewhat similar to M. planata, in having the first dorsal pore in 11/12, the absence of genital markings in both spermathecal and male regions, and the shape of the openings of copulatory pouches. However, it is distinguished by the absence of accessory glands in the spermathecal region, spermathecae with thin ducts, strongly waved diverticula, connected seminal vesicles, and its smaller size (length = 67 mm, diameter = 2.4–2.8 mm). On the contrary, M. planata has several accessory glands with long ducts, spermathecae with stout ducts, diverticulum straightly cylindrical, somewhat slightly expanded distally, separated seminal vesicles, and a larger size (length = 125 mm, diameter = 4.8 mm).Published as part of Nguyen, Tung T., Nguyen, Nam Q., Lam, Dang H. & Nguyen, Anh D., 2020, Six new species of the genus Metaphire Sims & Easton, 1972 (Annelida: Oligochaeta: Megascolecidae) from southeastern Vietnam, pp. 220-236 in Raffles Bulletin of Zoology 68 on page 228, DOI: 10.26107/RBZ-2020-0019, http://zenodo.org/record/457721
Parahellenia trongduyii Juan Chen, V. C. Nguyen, K. S. Nguyen & N. H. Xia 2023, sp. nov.
No full text<i>Parahellenia trongduyii</i> Juan Chen, V.C.Nguyen, K.S.Nguyen & N.H.Xia, <i>sp. nov.</i> <p> <b>Diagnosis</b>:—It is similar to <i>P. tonkinensis</i>, but differs in unbranched or barely branched (vs. densely branched) stems, narrowly triangularlanceolate (vs. broadly triangular) and glabrous (vs. densely pubescent) axillary buds, softly mucronate (vs. pungent, making a finger bleeding if touched) bract apex, yellow to whitish yellow labellum with longitudinal orange to red lines at center (vs. yellow labellum with longitudinal red lines at center), anther crest 9‒12 mm (vs. 3‒5 mm) long and slightly bilobed (vs. deeply bilobed) dorsal appendage of stigma.</p> <p> <b>Type</b>:— Collected from the material cultivated at V. C. Nguyen’s private garden on 25 August 2021, <i>V. C. Nguyen & V. K. Nguyen CD 01</i> (holotype HN; isotypes HN, IBSC). Originally collected by T. D. Nguyen in July 2019 from Vietnam, Dak Lak Province, Krong Bong District, Chu Yang Sin National Park, Yang Mao Commune, along banks of small streams at elevations of 700‒900 m a.s.l. (Figs. 1‒3).</p> <p> Terrestrial evergreen perennial <i>herb</i>. <i>Rhizome</i> plagiotropic, tuberous, 2‒4 cm in diam., brown externally, white internally, glabrous. <i>Leafy shoot</i> 75‒140(‒250) cm tall, up to 3 cm in diam. at base. <i>Stem</i> more or less straight, erect to suberect, unbranched or barely branched at higher nodes. <i>Axillary bud</i> 1 at each node, narrowly triangular-lanceolate, 12‒15 × 5‒6 mm, green with red tip, glabrous. <i>Bladeless sheaths</i> closed, reddish brown, membranous, caducous, glabrous. <i>Leaves</i> 10‒20, consistently clustered toward the shoot apex; <i>sheaths</i> closed, pale green when young, later becoming reddish brown, glabrous; <i>ligule</i> 1.8‒2.5 mm long, glabrous, upper margin minutely fimbriate; <i>petiole</i> 0.9‒2.2 cm long, 0.8‒1 cm in diam., adaxially grooved, yellowish green, reddish brown at base, glabrous; <i>blades</i> 20‒35 × 5‒8 cm, the lowest ones obovate to oblanceolate, the upper ones oblanceolate to elliptic, base narrowly attenuate, apex acuminate, adaxial surface deep green, abaxial surface pale green, glabrous on both sides, midvein slight sunken adaxially and conspicuously raised abaxially. <i>Inflorescence</i> arising directly from the rhizome, 20‒25 cm long (including peduncle and bracts only), lax; <i>peduncle</i> horizontal to ascending, terete, 4‒6 cm long, 1.4‒1.6 cm in diam., bearing 4‒6 sheaths, sheaths tubular, coriaceous, reddish brown, glabrous; <i>spike</i> 16‒20 × 6‒9 cm, narrowly ellipsoid or nearly cylindrical; <i>secondary peduncle</i> very short, glabrous; <i>bracts</i> 4‒5 × 2‒2.5 cm, the lowest bracts broadly elliptic, the upper ones elliptic, cucullate, apex softly mucronate (not pungent), coriaceous, pale brown to reddish brown, glabrous, each subtending 1 flower with 1 bracteole; <i>bracteoles</i> 2.5‒2.8 × 0.7‒0.9 cm, narrowly lanceolate, apex acuminate to spiny (but not pungent), coriaceous, pale brown to reddish brown, glabrous. <i>Flowers</i> 8.5‒10 cm long; <i>calyx</i> 3.2‒4 cm long, coriaceous, pale green when young, becoming reddish brown when old, glabrous, tube 2.5‒3.3 cm long, 7‒9 mm in diam., lobes 3, 0.7‒1 × 0.6‒0.7 cm, broadly ovate, slightly involute, apex softly mucronate, pale green with reddish brown apex when young, becoming reddish brown when old; <i>floral tube</i> (from apex of ovary to base of divergence of corolla lobes) 2.2‒2.5 cm long, 0.3‒0.5 cm in diam., fused with style in basal 1.6 cm, white, glabrous externally; <i>corolla lobes</i> 4.3‒5 × 1.9‒2.2 cm, obovate, white, glabrous; <i>staminal tube</i> (from the point of divergence of corolla lobes to base of divergence of labellum and stamen) 1.4‒1.7 cm long, yellow, with dense yellow hairs internally, pubescent externally; <i>labellum</i> 6.5‒7.5 × 5.5‒6.5 cm, flabellate after full expansion, yellow to whitish yellow with longitudinal orange to red lines at center, covered with glutinous papillae at center and base, margin rugose and pubescent; <i>stamen</i> 3.2‒3.6 cm long (when crest flattened), 0.6‒1 cm wide, petaloid, oblong, yellow, adaxially concave, glabrous, abaxially slightly convex and thickened, with sparse long glandular hair; <i>anther crest</i> 0.9‒1.2 cm long, 5.5‒6.2 mm wide, oblong, strongly recurved to revolute on abaxial side, yellow with longitudinal red lines at adaxial side, broadly acute to obtuse at apex, margin pubescent; <i>thecae</i> 0.9‒1 cm long, 1.8‒2.4 mm wide in the middle, slightly broadening towards ends. <i>Ovary</i> inferior, 1.1‒1.4 cm long, 5‒6 mm in diam., glabrous, trilocular with axile placentation and apically embedded beige-coloured gynopleural nectaries, each locule with numerous ovules; <i>style</i> 4.5‒4.8 cm long (free part), glabrous; <i>stigma</i> 1.7‒1.8 mm long, 2.8‒3.3 mm wide, semi-circular, flattened, 2-lobed, lobes overlapping, white, margin ciliate, dorsal appendage slightly bilobed, white. <i>Infructescence</i> of almost the same size as inflorescence, often continuously formed (with fruits at base when flowers still anthetic at apex), with persistent bracts and bracteoles. <i>Fruits</i> 1.8‒2.2 cm long, 1.1‒1.2 cm in diam., nearly ellipsoid, reddish brown, glabrous, with persistent calyces. <i>Seeds</i> 3‒4 × 2‒2.3 mm, irregularly barrel-shaped, black, aril basal and not enclosing the seed, white.</p> <p> <b>Phenology</b>:—Flowering from June to August; fruiting from July and likely continuing till October.</p> <p> <b>Etymology</b>:—The specific epithet is named after Mr. Nguyen Trong Duy, who collected the living material of the species in its type locality.</p> <p> <b>Suggested common names</b>:—Mía dò Trọng Duy (Vietnamese), <i>Øṃṁƛąae</i> (duō lè dì wō sŭn huā) (Chinese).</p> <p> <b>Distribution, habitat and conservation</b>:—This species is currently known from Chu Yang Sin National Park in Dak Lak Province and Thach Nham protected forest in Kon Tum Province in Vietnam. <i>Parahellenia trongduyii</i> grows in shady, moist places along small streams, in evergreen broad-leaved forests at elevations of 700–900 m a.s.l. We observed five clumps of the species in Chu Yang Sin National Park, a protected area where agricultural activities and exploitation of non-timber forest products are prohibited. Due to lack of information on the distribution (extent of occurrence (EOO) or areas of occupancy (AOO)) and population size of <i>P. trongduyii</i>, its conservation status is assessed here as Data Deficient (DD), following the IUCN Red List Categories and Criteria (IUCN 2012).</p> <p> <b>Notes</b>:—As elaborated in the diagnosis, <i>Parahellenia trongduyii</i> closely resembles <i>P. tonkinensis</i> but is readily distinguished from it in the field even by vegetative characters, e.g., barely branched leafy shoots and narrowly triangular-lanceolate glabrous buds.</p> <p> <i>Parahellenia trongduyii</i> is also similar to <i>P. candida</i>, but differs in reddish brown (vs. brown) and glabrous (vs. densely puberulent) bladeless sheaths, glabrous (vs. puberulous) abaxial side of leaf blade, softly (vs. sharply) mucronate bract apex and yellow (vs. white) flowers. A detailed comparison is provided in Table 1.</p> <p> <b>Additional specimen examined (paratype)</b>:— VIETNAM. Kon Tum Province: Kon Plong District, Thach Nham protected forest, 17 km N of Mang Den Town, near river, 14°45’26’’N 108°18’35’’E, 900 m, 8 June 2016, <i>M. S. Nuraliev 1673</i> (MW: MW0753815) (Fig. 4).</p>Published as part of <i>Chen, Juan, Nguyen, Van Canh, Nguyen, Van Khuong, Nguyen, Khang Sinh, Nuraliev, Maxim S. & Xia, Nianhe, 2023, Taxonomic studies on Parahellenia (Costaceae) in Vietnam: a new species, P. trongduyii, and a new combination, P. candida, pp. 72-80 in Phytotaxa 583 (1)</i> on pages 73-79, DOI: 10.11646/phytotaxa.583.1.7, <a href="http://zenodo.org/record/7609199">http://zenodo.org/record/7609199</a>
Annamocalamus kontumensis H. N. Nguyen, N., spec. nova
No full text<i>Annamocalamus kontumensis</i> H. N. Nguyen, N.-H. Xia & V. T. Tran, spec. nova (Fig. 1, 2). <p> <b>Typus: Vietnam, Kon Tum Province:</b> Ngoc Linh Mountain, Ngoc Linh village, c. 1200 m, 23.II.1995, fl. & fr., <i>Averyanov & al. VH020</i> (holo-: P [P00451097]).</p> <p> <i>Rhizomatis sympodialibus, rhizomemate brevi collo, culmi erectus, vaginis auriculis conspicuis, dorso dense adpresseque atro-strigosis, laminis triangularis, erectus, basis producens, deciduus, inflorrescentilis iterauctantilus, pseudospiculae ad convivia in foliis nodorum distal ramis florentibus, glumis 3, flosculis hermaphroditus 1, lodicula 3, stylus longis, stigmatibus 3, brevis, frutus carnosus.</i></p> <p> <i>Densely tufted</i> with rhizomes short necked, pachymorph. <i>Culms</i> erect, 4-8 m tall; internodes 60-80 cm long and 3- 4.5 cm in diameter, when young densely covered with appressed white hairs, becoming rough when old due to silica; culms walls 2-3 mm thick; nodes slight swollen. <i>Branches</i> a cluster of slender subequal branches, none dominant, these branching further. <i>Culm</i> sheaths persistent, greenish brown, rough, when young covered with densely appressed purplebrown bristle on the abaxial surface; 20-25 cm long and 12- 16 cm wide at the base; apex 8-10 cm wide, margins dense purple-brown hairs; blade tardily deciduous, triangular, erected, base black-brown when young and produced upwards into rounded, 10-15 × 6-8 cm, abaxial dense white powder, margins dense cilia, adaxilly dense hairs at the base; one auricle standing, 2-2.5 × 0.4-0.6 cm, other one margin curved downwards, 1.5-2 × 0.4-0.5 cm, adaxilly dense purple-brown bristle, ca. 0.9 cm long; ligule ca. 0.3 cm long with dense paleciliate, ca. 0.3 cm long. <i>Leaf</i> blades oblong-obovate, base broadly cuneate, 30-34 × 3.5-4 cm, veins in 13-14 pairs, margins and adaxilly surface dense white cilia; leaf sheaths dense white cilia, auricles ca. 0.3 ×c a. 0.2 cm with slender bristles, 5-8 mm long; ligule low rim, ca. 1mm; petiole 4-5 × 2-3 mm. <i>Pseudospikelets</i> in groups at the distal nodes on leafless flowering branches, ca. 8 mm long; 1 fertile floret, glumes 3, upper most obovate, 4-5 × 2-3 mm, apex acute, mucronate, mucro ca. 1 mm long, veins in 5, margins short white-hispid, abaxial surface sparse white cilia; lemma oblong-lanceolate, 5-6 × 3-4 mm, veins in 9-11, apex acute, mucronate, mucro 1.5- 2 mm long, convolute and covering most of the palea, margins dense white cilia; palea oblong-lanceolate, 7-8 × 2.5-3 mm, veins in 9-11, strongly involutes, sparse white cilia, apex bifid ca. 1 mm long, with a narrow groove on the back (at the base rachilla is joined); lodicules 3, obovate-shaped, 0.7-1 × ca. 0.5 mm margins long cilia; stamens 6, filaments free, 4-5 × 0.4-0.5 mm; style long; stigmas 3, plumose; ovary glabrous, short stalked. <i>Pericarp</i> thick, apple shaped, fleshy, globose, top horizontal or slightly truncated in the middle, 12-15 × 12- 15 mm.</p> <p> <i>Distribution and habitat.</i> – The new species grows in the degraded natural forest in valleys and mountain gorges, but is common along river or valleys, between 500 to 1200 m in the western highland of Vietnam.</p> <p> <i>Phenology. – Annamocalamus kontumensis</i> flowered in December 1946 <i>(Poilane 35696)</i> and January 1995 <i>(Averyanov & al.VH020).</i> New shoots seems to develop between June to August.</p> <p> <i>Local uses.</i> – This species is of considerable importance to the local people. Its culms are used for making handicrafts, household tools.</p> <p> <i>Etymology.</i> – The specific epithet refers to the type locality, Kon Tum Province, Vietnam.</p> <p> <i>Paratypi.</i> – <b>VIETNAM. Kon Tum Province:</b> Dak To District, Lo Xo Pass, 15°13’338’’N 107°44’052’’E, 1071 m, 28.VIII.2005, st., <i>H. N. Nguyen</i>, V. T. <i>Tran</i> 2820050540 (FSIV); Dak To and Dak Blan District, 1.IX.1946, fl. & fr., <i>Poilane 35696</i> (P).</p>Published as part of <i>Tran, Van Tien, Nguyen, Hoang Nghia & Xia, Nian-He, 2013, Annamocalamus H. N. Nguyen, N. - H. Xia & V. T. Tran, a new genus of bamboo (Poaceae) from Vietnam, pp. 159-165 in Candollea 68 (1)</i> on page 161, DOI: 10.15553/c2013v681a23, <a href="http://zenodo.org/record/5747054">http://zenodo.org/record/5747054</a>
Trogolaphysa wahlgreni Nguyen & Soto-Adames 2018, n. comb.
No full textTrogolaphysa wahlgreni (Mitra, 2002) n. comb. Dicranocentruga wahlgreni Mitra, 2002c: 109-113, figs 1-3, 5 (Meru, Kenya). Paronella nigromaculata – Wahlgren 1908: 2, 4, 6-8 (wrong identification). REMARKS Mitra (2002c) described this species based on material Wahlgren (1908) identified as P. nigromaculata. This species is characterized by being uniformly yellow or white, with pigment only on eye patch; labral papillae present; anterior head chaetotaxy with one unpaired (A0) and six paired (A2, A3, A5, M2, S3, S5) macrochaetae, posterior chaetotaxy with one paired macrochaeta (Pa5); mesothorax to 4 th abdominal segment with 60/0114 inner macrochaetae; tenet hair long, strongly spatulate; unguis with 3 inner teeth, paired teeth inserted near middle of claw, one paired tooth slightly longer than other; unguiculus lanceolate; dens with one row of spines; mucro square, quadridentate. This is a typical Trogolaphysa, and very similar to T. judithnajtae n. sp. (see diagnosis for that species). The original body macrochaetae map for abdominal segments 2-4 published by Mitra (2002c: 113) confounds symbols for macrochaetae and pseudopores, but once the confusion is resolved, the inner chaetotaxy is typical Trogolaphysa. This is the only African species uniformly white or yellow having head macrochaetae M2 and S5, labral papillae, unguis with three inner teeth and one row of spines on dens.Published as part of Nguyen, Minh & Soto-Adames, Felipe N., 2018, Annotated checklist of Afrotropical Trogolaphysa Mills, 1938 (Hexapoda: Collembola: Paronellidae) and description of a new species from Madagascar, pp. 179-196 in Zoosystema 40 (10) on page 192, DOI: 10.5252/zoosystema2018v40a10, http://zenodo.org/record/373822
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