331,517 research outputs found
Dicelis eudrilii Ivanova & Hope, 2009, n. sp.
No full textDicelis eudrilii n. sp. (Figs 1–2) Measurements: Table 1. TABLE 1. Morphometrics of Dicelis eudrilii n. gen., n. sp. Measurements are ranges in µm. Adult: Large drilonematids. Body long, cylindrical, barely tapering to anterior end, with short conoid tail in both sexes. Cuticle finely striated. Lateral chords about 13–18 µm wide, comprised of two rows of vacuolated cells. Head bluntly rounded, bearing two circles of small cephalic papillae (6 + 4). Mouth aperture terminal. Stoma short, infundibular. Amphidial apertures not discernible, short bundle of sensilla conspicuous posterior to head papillae. Pharynx short, cylindroid and heavily muscled: cardia short. Nerve ring surrounding constriction of intestine about 2–3 body diameters posterior to pharynx base. Excretory pore about 2 µm in diameter, 1 body diameter posterior to nerve ring. Excretory duct as wide as excretory pore, about 13–22 µm long and cuticularised; excretory cell enormous. Intestine well-developed, thick-walled. Tail bearing small fimbriate caudal organs situated slightly asymmetrically near mid-tail length. Male: Body about 2.6–3.4 mm long. Stoma 2–5 µm long and 7–10 µm in diameter. Pharynx 22–25 µm in diameter. Testis long, reflexed slightly posterior to excretory pore. Distal end of testis flexure 220–570 µm long. Immature sperm spherical, about 5–6 µm in diameter. Spermatids in ejaculatory duct about 17–20 µm x 14–18 µm in size. Copulatory muscles prominent. Spicules long, distinctly cephalate, heavily sclerotized, uniformly curved and bearing paired, serrated ventrolateral ridges; capitula about 1 / 7 of length, slightly elongated, and similar in diameter to shaft; distal tips long, thin, rounded. Gubernaculum about 1 / 2 of spicule length, plate-like, sometimes with short proximal process bent posteriad. Paired, prominent precloacal papillae present in front of cloaca and a pair of smaller ones just posterior to cloaca, both subventrally placed and covered by very thin membrane. Fimbriate caudal organs slightly raised, with a circular aperture 6–9 µm in diameter and convex radially striated rim 10–12 µm in diameter, located just anterior of mid-tail length. Tail well-tapered, tail tip rounded. Female: Body about 4 –5.3 mm long. Stoma 7–10 µm long and 8–15 µm in diameter. Pharynx 30–32 µm in diameter. Proximal tip of ovary situated between vulva and anus; ovary looped twice between distal and proximal ends of ovary; oviduct flexed posteriorly at junction with about 3 pharynx lengths from anterior. Spermatheca, 240–275 µm long, directed anteriorly from flexed juncture of ovary and oviduct and filled with large bean-like spermatozoa 8–14 µm x 4–6 µm in size. Oviduct looped and bearing spherical cells (of glandular nature?). Uterus large, thin-walled, packed with numerous eggs. Eggs widely elliptical, shell about 1.5 µm thick, covered by irregularly shaped, flat, densely packed minute tubercles. Vagina straight, short. Vulval lips not prominent. Vulva post-median. No post-uterine sac present. Rectum long with sclerotized lining. Rectal glands present. Tail slightly larger in diameter than in males, tapering to the end with blunt conical tip 2–3 µm long. Fimbriate organs situated at mid-tail or slightly further back; the same in structure as in males, 17–25 µm in diameter of outer rim, aperture 8–15 µm in diameter. Three caudal glands present. Juvenile. Head end, pharynx, nerve ring and excretory pore as in adult nematodes. L III: vulval primordium situated at posterior end of genital primordium measuring 620 µm long. Type material: Holotype female USNM 1117733, paratype female USNM 1117734, 2 paratype males USNM 1117735 and 1117736, immature female USNM 1117737 and juvenile USNM 1117738 deposited in the Smithsonian Institution’s National Museum of Natural History. Further paratype female No 1068 deposited in the Museum of Helminthological Collections in the Centre of Parasitology of A.N. Severtsov Institute of Ecology and Evolution RAS, Moscow, Russia and paratype male and fragments of male and female are in the first author’s collection. Type host and locality: Coelomic cavity of Eudrilus sp., USNM 52754, collected 145 miles NW from Lagos, University of Ifa, Nigeria, May–June 1975, leg. A.O. Segun. Etymology: The species is named after its earthworm host. Diagnosis and relationships. Drilonematoidea, Drilonematidae, Dicelinae. This species is characterized by well-tapered, conoid tail in both sexes, cephalic papillae in two circles, cylindroid pharynx, faint amphids with pore-like apertures, conspicuous excretory pore, nerve ring situated around intestine in front of excretory pore in adults and juveniles, long off-set spermatheca, post-median position of vulva, lack of post-uterine sac, smallish fimbriate organs, strong long spicules, and male caudal papillae reduced to two pairs. A narrowly conoid tail, prominent excretory pore, very long spermatheca, relatively long spicules and presence of only two pairs of male caudal papillae distinguish this species from the other nominal species in the genus, all of them of Palearctic origin and parasitic in lumbricid earthworms. The genus Dicelis includes 14 species, viz. D. filaria Dujardin, 1845 (type species), D. caledoniensis Spiridonov, Ivanova & Wilson, 2005, D. eiseniae Timm, 1967, D. hyrcanus Belostotskaya, Kozodoi & Spiridonov, 1987, D. keimeri Morand, Ivanova & Vaucher, 1996, D. kimmeriensis Ivanova, 1993, D. lovatiana Ivanova, 1993, D. lumbricicola Ivanova, 1993, D. nira Chitwood & Lucker, 1934, D. pereliae Ivanova, 1993, D. rossica Timm, 1967, D. rubidi Ivanova, 1994, D. sibirica Ivanova, 1994 and D. ussuriensis Spiridonov, Ivanova & Wilson, 2005. All of them have shorter, broader, cylindroid or conoid tails, often with digitiform appendages, much smaller and sometimes morphologically indistinct spermatheca, shorter spicules and indistinct excretory pore and duct. Exceptional for, and characteristic of, D. eiseniae, are the position of the vulva near mid-body and the presence of a post-uterine sac. The characters by which this species differs from other species of Dicelis, namely the narrowly conoid tail, prominent excretory pore, very long spermatheca and spicules, post-median vulva position and fimbriate organs, are more similar to characters of another genus of the same subfamily, namely Adieronema Timm, 1967. This latter genus is parasitic in megascolecid earthworms of East-Asian origin, but Dicelis differs from this genus by the absence of polar differentiation in eggs, (present in Adieronema). Remarks. The Dicelinae, to which this species is assigned, contains only two genera, Dicelis and Adieronema. The first is parasitic in lumbricid earthworms and the second in megascolecids. Our new species is the first representative of the subfamily parasitic in a host from another family and geographical region. Timm (1967) differentiated Adieronema from Dicelis on the basis of a few characters, i.e. larger size, prominent excretory pore and very numerous typical ova with bipolar corona. This species displays affinities with species of both genera. In terms of general appearance it more strongly resembles species of Adieronema than those of Dicelis, but shares similarities with Dicelis spp. in body size, and less numerous (several dozens vs several hundreds), but larger sized eggs lacking polar differentiation. For several species of Dicelis (D. hyrcanus, D. lovatiana, D. rubidi, D. caledoniensis) it has been shown that the nerve ring in juveniles is situated around the pharynx, but that it “slips” to a position around the intestine during the growth of the nematodes. In the new species the nerve ring position remains the same in both adults and juveniles. This species may represent yet another lineage of the genus, associated with eudrilid earthworms. Paradicelis gen. n. Diagnosis. Drilonematoidea, Drilonematidae, Dicelinae. Four papilliform cephalic sensilla. Mouth aperture terminal. Stoma short, infundibular. Amphids pore-like. Pharynx cylindroid. Nerve ring circum-intestinal. Excretory pore anterior to nerve ring. Males monorchic; spicules paired and curved; gubernaculum plate-like. Irregular bursa supported by whip-like sensilla. Paired small caudal fimbriate organs present. Females unknown. Etymology: The generic name reflects an affinity with the genus Dicelis. Type and only species: Paradicelis bursata gen. n., sp. n.Published as part of Ivanova, Elena S. & Hope, Duane, 2009, A new genus and three new species of Drilonematidae (Rhabditida, Drilonematoidea) from earthworms, pp. 53-67 in Zootaxa 2293 on pages 54-58, DOI: 10.5281/zenodo.19146
Barsochrista ocellata Ivanova 2017, comb. nov.
No full textBarsochrista ocellata (Hampson, 1907), comb. nov. (Figs. 5, 6, 9, 12) Miltochrista ocellata Hampson, 1907, The Annals and Magazine of Natural History (7) 19: 234 (Type locality: [Sri Lanka] "Ceylon, Ohiya"). Type material examined. Holotype (by monotypy): ♀, handwritten grayish label " Ceylon, Ohyia, Sept., de Mowbray, 1904-39 " / handwritten grayish label " Miltochrista ocellata type ♀ Hmpsn." / printed yellowish ring label with a red circle " Type " / printed white label with QR-code " NHMUK010604469 " (Coll. NHM). Other material examined. 2 ♂, 1 ♀, [Sri Lanka] Maskelyia, Ceylon, October / Brit. Mus. 1951-288, slide NHMUK010313523 Volynkin (♂) (Coll. NHM); 1 ♀, [Sri Lanka] Ohiya / Brit. Mus. 1927-341 / Miltochrista ocellata ♀ Hmpsn., slide NHMUK010313414 Volynkin (♀) (Coll. NHM). Diagnosis. Externally, the species (Figs. 5, 6) is similar to the pale form of B. kishidai (Figs. 3, 4), but differ by its slightly broader forewings with slightly smaller elliptical discal spot. The male genitalia (Fig. 9) is very similar to that of B. kishidai (Figs. 7, 8), differing in the larger uncus, shorter vinculum, valva broader medially, larger costal process, and the less setose dorsal margin of sacculus. In the female genitalia, B. ocellata (Fig. 12) has smaller spines in the ring-like medial cluster.Published as part of Ivanova, Maria S., 2017, On the taxonomy of the genus Barsochrista Singh & Kirti, 2016 (Lepidoptera, Erebidae, Arctiinae), pp. 180-184 in Zootaxa 4312 (1) on page 184, DOI: 10.11646/zootaxa.4312.1.9, http://zenodo.org/record/85227
CHU-YANG HUANG, ANTON V. VOLYNKIN, LI-JUAN ZHU, MIN WANG & SI-YAO HUANG (2021) Contribution to the knowledge of the genus Fossia Volynkin, Ivanova & S.-Y. Huang, 2019 (Lepidoptera: Erebidae: Arctiinae: Lithosiini) from China with description of a new subspecies. Zootaxa, 5023 (2): 284-292.
No full textVolynkin, Ivanova (2022): CHU-YANG HUANG, ANTON V. VOLYNKIN, LI-JUAN ZHU, MIN WANG & SI-YAO HUANG (2021) Contribution to the knowledge of the genus Fossia Volynkin, Ivanova & S.-Y. Huang, 2019 (Lepidoptera: Erebidae: Arctiinae: Lithosiini) from China with description of a new subspecies. Zootaxa, 5023 (2): 284-292. Zootaxa 5120 (4): 598-598, DOI: 10.11646/zootaxa.5120.4.1
Archiv Vjaceslava Ivanova v Rime. Opis' II. "Chudozhestvennye proizvedenija: povesti, p'esy, dramaticheskie otryvki".
No full textDescrizione dell'Archivio Vjaceslav Ivano
Araguanema mutabile Ivanova 2016, sp. nov.
No full textAraguanema mutabile sp. nov. Figs 1 & 2 Type specimens: Holotype female (catalogue number MHNG-INVE-92679) and a paratype female (MHNG- INVE-92681) deposited in the Muséum d’histoire naturelle, Geneva, Switzerland. Diagnosis: Araguanema mutabile sp. nov. is characterised by the presence of somatic sensory organs of two types, the different number of fimbriate organs in different specimens, four cephalic papillae, a short, widened, cuticularised stoma, inconspicuous amphids, a muscular, clavate pharynx with the long corpus expanded at anterior, an isthmus and a basal bulb, a nerve ring encircling isthmus, no distinct spermatheca, a posterior position of vulva, eggs with thick, faintly-coloured egg-shells, and a wide anus with long protruding fibres. Males unknown. It was assigned to the genus Araguanema Ivanova & Hope, 2004 on the basis of the presence of somatic sensory organs of two types, four cephalic sensilla, a muscular pharynx, a nerve ring position anterior to the pharynx bulb, the similarly structured reproductive system without a differentiated spermatheca, the similar vulva position and similar, characteristic structure of anus. It closely resembles A. venezuelae Ivanova & Hope, 2004, the only other known species of the genus, in general appearance and body proportions and the structure of sensory organs. The new species is distinguished from A. venezuelae by the differently shaped pharynx (vs cylindrical with the slight basal swelling), inconspicuous vs prominent amphids, a different stoma structure (vs shallow, infundibilar, non-cuticularised), more numerous eggs with ornamented vs smooth egg-shells and the different arrangement of the sensory organs (more numerous, larger fimbriate organs and vesicular organs arranged in one file vs two files). Other genera of Diceloidinae include Diceloides Timm, 1967 and Mbanema Spiridonov, 1992 (Timm, 1967; Spiridonov, 1992). The former genus was described from the glossoscolecid host Thamnodrilus yunkeri Gates, 1968 from Panama (Timm, 1967). Male morphology is unknown for Diceloides as well as Araguanema. The original description of Diceloides was also based mostly on females because the only male specimen obtained was incomplete, lacking the tail end. The general morphology of Diceloides and Araguanema is similar in the structure of a head end, the female reproductive system and the presence of two types of sensory organs of a lateral field, fimbriate and vesicular. The main diagnostic feature for these genera is the position of a nerve ring which is located on an intestine in Diceloides, but on pharynx in Araguanema. Timm (1967) also reported the presence of an offset spermatheca in Diceloides which is absent in Araguanema. Mbanema nigeriense Spiridonov, 1992 was recovered from the earthworm Eudrilus eugeniae (Kinberg, 1867) (Eudrilidae) from Nigeria (Spiridonov, 1992). It is differentiated from the other genera of Diceloidinae in having the sensory organs of the only type - vesicular ones (Spiridonov, 1992). The salient spermatheca was also reported. The different number of fimbriate organs in both specimens described below remains unexplained and calls in question the credibility of this trait for the species identification within Araguanema. For both species of this genus, the different disposition of fimbriate organs on left and right body sides was noted while their number remains unknown (Ivanova & Hope, 2004). Etymology: The species name refers to the variability in the number of fimbriate organs. Description Female: Short, stout nematode. Body tapered to both ends. Head end bluntly rounded. Tail broadly conical. Short conical mucron 3-4 μm long present. Cuticle 2-3 μm thick, distinctly annulated (annuli ca. 2 μm wide). Lateral chords stretched from short distance from apex to nearly to tail tip, ca. 20 (19-23) μm wide. Left lateral chord of holotype bearing irregular row of vesicular sensory organs (VO) broken by large, prominent fimbriate organs (FO) (Fig. 1A, E, F). VO 6-9 μm in diam., with shallow cavity and seta inside observed only in portion of organs. VO arranged in one disorderly file with interval between them 2-6 μm and located in the middle of lateral chord at body ends but slightly displaced dorso-laterally at midbody. Total number of VO exceeding one hundred. Six FO present: anteriormost in 80 μm from apex; second in 300 μm from it or at the level of ovary reflexion; third in 370 μm posteriad; fourth in 190 μm further away; fifth just anterior to vulva level; sixth at mid-tail. Each FO crater-like, convex, radially striated, 32±4 (27-36) μm in basal diam., with an aperture 7±2 (5-9) μm in diam. and a single protruding sensillum; flanked by smaller vesicular organs 2-5 μm in diam. On the right lateral chord, the anteriormost and posteriormost FO located closely to body ends. In the paratype, 24 FO positioned along lateral chord anterior to anus between VO in a pattern similar to the holotype, distanced from each other in 78±10 (65-90) μm. Additionally, 2 FO located very slightly asymmetrically in caudal region in 120 μm from tail tip (Fig. 1G); all FO of paratype slightly smaller than those in holotype: 24±3 (21-28) μm in basal diam. and aperture 7±3 (3-10) μm in diam. Mouth aperture small. Lips absent. Four bristle-like sensilla slightly distanced from mouth aperture. Amphids not detected. Stoma small, bowl-shaped, cuticularised, with walls ca. 1 μm thick (Fig. 1B); in paratype straighter than in holotype (Fig. 1C). Pharynx (Figs 1C; 2A) extending to anterior end, muscular, clavate, with long corpus expanding towards anterior, short, not demarcated morphologically isthmus and small pyriform basal bulb. Corpus 34 μm wide at anterior in holotype, 24 μm in paratype; isthmus 20 μm wide, bulb 20 μm wide and 27 μm long. Nerve ring encircling isthmus. Excretory pore in holotype located opposite nerve ring in dorsolateral position (Fig. 1A); not detected in paratype. Cardia small. Intestine with thickened walls and darkish content. Reproductive system monodelphic, prodelphic. Ovary tip situated between vulva and anus in holotype, posterior to anus in paratype. Ovary 34 μm wide distally, oocytes initially numerous, then placed in two, than one row. Mature oocytes large, with thick walls. Ovary running to anterior by dorsal body side and reversing at short distance from pharynx base. Spermatheca not demarcated. Oviduct indistinct. Up to 17 eggs in thinwalled uterus. Eggs ovoid, with egg-shells ca. 2 μm thick covered by minute tubercles divided by shallow grooves (Fig. 1H, I). Egg-shells and proximal part of ovary with ink-bluish colouration (Fig. 2B). Vagina short (18 μm), slightly inclined, directed posteriad (Fig. 1D). Vulval lips very slightly enlarged. Vulva posterior. Anus at a short distance to vulva, rectum a large chamber with numerous long, hair-like fibres protruding from anus (Fig. 2C). Anus position in paratype obscured and was estimated approximately. Rectal glands not detected. Dimensions Holotype female (broken): L = 1518 μm; max width = 100 μm; anal width = 51 μm; Ph = 147 μm; Ex = 128 μm; NR = 125 μm; anterior to ovary flexure = 268 μm; V % = 81.4; egg 74 μm x 40 μm; tail length = 154 μm; a = 15.2; b = 10.3; c = 9.9. Paratype female: L = 1953 μm; max width = 105 μm; anal width = 69 μm; Ph = 153 μm; anterior to ovary flexure = 370 μm; V % = 81.3%; egg = 67 μm x 41 μm; tail length = 135 μm; a = 18.6; b = 12.8; c = 14.5. Type habitat: Anterior region of coelomic cavity. Type host and locality: Aptodrilus fuhrmanni (Michaelsen, 1918), (Annelida, Clitellata, Lumbricina, Glossoscolecidae), MHNG-INVE-92020, Ecuador, Prov. Bolivar, Cashka Totoraz, 3200 m Paramo, 03.04.1987. See Zicsi (1988) for description of these specimens. Remark: The description is based mainly on the holotype female, which is in lateral position with the left side on top. The details of morphology of the right side of body (particularly, the number of fimbriate organs) were traced only on body ends due to the significant body thickness. The anterior part of the paratype female is positioned similarly while the posterior is in the subventral position. The condition of the paratype did not allow locating an excretory pore.Published as part of Ivanova, Elena S., 2016, Araguanema mutabile sp. nov., a new species of a rare genus (Drilonematoidea: Cephalobomorpha) parasitic in earthworms of Ecuador, pp. 253-258 in Revue suisse de Zoologie 123 (2) on pages 254-257, DOI: 10.5281/zenodo.15529
The Image of the Author in the "Selected Passages from Correspondence with Friends" by Nikolai Gogol .
No full textIvanova Natalija
Autora tēls N. Gogoļa „Atlasītajos fragmentos no sarakstes ar draugiem” : bakalaura darbs. – Riga, 2014. – 44 lpp.
Darbs ir veltīts sensacionālai sava laikā un nezaudējisi nozīmi mūsdienās grāmatu Nikolaja Gogoļa "Atlasītie fragmenti no sarakstes ar draugiem". Šī pētījuma mērķis ir noteikt autoru tēlus, kas bija izmantoti grāmatas tapšanā.
Šis darbs sastāv no divām daļām. Pirmajā daļā autors izskata materiālus par grāmatas ideju,tās sastādīšanas vēsturi , kā arī kritisko atzinību žurnālistikas aprindās.
Otrā daļa ir analītiskā un salīdzinošā autora tēlu analīze,viņa metodes, kā arī autora izmantotā mākslinieciskā tehnika.
Darbs var ieinteresēt N. Gogoļa cienītajus un pētniekus, kas nodarbojas ar vēlakā perioda Gogoļa darbu, kā arī religiskā noskaņojuma atspoguļojumu daiļdarbā.Ivanova Natalija
The Image of the Author in the "Selected Passages from Correspondence with Friends" by Nikolai Gogol : baccalaureate work. – Riga,2014. – 44 p.
Work is devoted to the sensational at the time and has not lost relevance in our time book Nikolai Gogol's "Selected Passages from Correspondence with Friends" and the study of the author's image in it. The purpose of this research is to identify the author`s image in creation of the book.
This work consists of two parts. In the first part, the author material reviews of the book plan, the history of book creation, as well as critical acclaim in journalistic circles.
Work may be interesting for philologists, connoisseurs of N. Gogol oeuvre, and researchers, engaged in the later period of Gogol's work, as well as a reflection of religious sentiment in writer`s oeuvre
Claire Ivanova, Kniestück
No full textSignatur des Originals: S 36/F08886Original eigenhändig signier
Paradicelis bursata Ivanova & Hope, 2009, gen. n.
No full textParadicelis bursata gen. n., sp. n. (Fig 3) Measurements: Holotype male: L = 6920 µm; D = 170 µm; anal diameter = 80 µm; Ph = 230 µm; nerve ring = 350 µm; excretory pore = 307 µm; tail = 220 µm; Sp (arc) = 136 µm; Sp (chord) = 118 µm; Gub = 65 µm; a = 40.7; b = 30.1; c = 31.5. Paratype male (fragment, anterior end): Ph = 212 µm; nerve ring = 347 µm; excretory pore = 267 µm. Male: Body long, cylindrical, barely tapering toward anterior end, with short conical tail. Cuticle finely striated. Lateral chords faint, about 5 µm wide at anterior, 20 µm wide at mid-body. Head bluntly rounded, bearing four papilliform cephalic sensilla. Mouth aperture terminal. Stoma short, infundibular, about 4–5 µm long and 6–7 µm in diameter. Amphids pore-like but bundle of amphidial sensilla prominent. Pharynx cylindroid, musculature well-developed, anterior diameter about 26–28 µm, expanded near base to 40–41 µm. Three large nuclei of pharyngeal glands at basal portion of pharynx. Nerve ring surrounding constriction of intestine about two pharynx lengths from anterior body end. Excretory pore 3 µm in diameter, situated anterior to nerve ring. Excretory duct 35–45 µm long, 1 µm in diameter, with expanded walls; excretory cell large. Cardia comprised of two cells, 12–15 µm long. Intestine well-developed, thick-walled. Testis very long, reflexed about two pharyngeal lengths from anterior body end (505–512 µm); distal flexure 303–320 µm long; testis looped between flexure and vas deferens. Va s de f eren s long, with thick glandular cells. Ejaculatory duct thin, muscular. Spermatids in ejaculatory duct spherical, about 7–9 µm in diameter. Tail coiled ventrally, conical with blunt tip, bearing small symmetrically situated caudal fimbriate organs slightly posterior from mid-tail. Irregular bursa present from before cloacal aperture to near tip of tail. Four pairs of long, whip-like caudal sensilla, subventral, extending to edge of bursa; three equally-spaced precloacal pairs and another pair mid-way between anus and caudal organ. Two equal spicules, each curved with proximal half expanded to 17 µm and with short rounded capitulum 17 µm long and 12 µm in diameter; each capitulum with proximally deflected fringe. Distal half of each spicule nearly cylindrical, 5 µm in diameter, with rounded tip. Gubernaculum about half spicule length, thick, 11 µm in diameter, heavily sclerotized, with distal spade-like process 5 µm long. Caudal organs 150 µm posterior from cloacal aperture, circular, slightly raised, with aperture 5 µm in diameter, with convex radially striated rim 11 µm in diameter. Copulatory muscles prominent. Female: Not found. Type material: Holotype male USNM 1117739 deposited in the Smithsonian Institution’s National Museum of Natural History. Fragment of male (anterior end) is in the first author’s collection. Type host and locality: Coelomic cavity of Pheretima longicauliculata Gates 1931 USNM 27569, collected in Doi Sutep, Thailand, September 1936, leg. Gates. Etymology: The specific epithet is derived from the Latin word bursa, a feature present in the new species. Diagnosis and relationships. Paradicelis gen. n. is characterized within Dicelinae by having a cylindroid pharynx slightly expanded near the base, nerve ring situated around the intestine, excretory pore situated in front of the nerve ring, irregular bursa, whip-like copulatory sensilla, and small fimbriate organs near mid-tail. Paradicelis gen. n. seems closely related to Dicelis and Adieronema. It resembles these genera in having similar general body proportions, pore-like amphids, muscular cylindroid pharynx, nerve ring situated around intestine, and similarly-shaped caudal organs. Whereas bursa and whip-like copulatory sensilla have not been encountered within either genus, these features are characteristic for several species in another subfamily of Drilonematidae, the Iponematinae (Iponema laotense Spiridonov, Filiponema philippinense Timm & Maggenti, F. b u r m e n s e Timm, F. sarmathicus Spiridonov et al., Plutellonema clitellatum Timm & Maggenti, Tonoscolecinema setosum Timm). In these species, however, these features are always accompanied by large circular or elliptical amphids, clavate pharynx and the nerve ring situated around the pharyngeal isthmus (Timm & Maggenti 1966; Timm 1967; Spiridonov et al. 1989; Spiridonov 1994 a). The structure of the bursa is similar in all drilonematids, including members of the other family, Homungellidae (Timm 1966 a; Spiridonov 1994 b). From Dicelis, the new genus can also be distinguished by the excretory pore being situated in front of the nerve ring (as opposed to behind it for all other Dicelis species known, and this position remains unchanged in juveniles and adults). Although no females were found, the character of having bursa supported by whip-like sensilla is specific at the generic level in Drilonematidae.Published as part of Ivanova, Elena S. & Hope, Duane, 2009, A new genus and three new species of Drilonematidae (Rhabditida, Drilonematoidea) from earthworms, pp. 53-67 in Zootaxa 2293 on pages 58-59, DOI: 10.5281/zenodo.19146
A new genus and three new species of Drilonematidae (Rhabditida, Drilonematoidea) from earthworms
No full textIvanova, Elena S., Hope, Duane (2009): A new genus and three new species of Drilonematidae (Rhabditida, Drilonematoidea) from earthworms. Zootaxa 2293: 53-67, DOI: 10.5281/zenodo.19146
FIGURES 7–9 in On the taxonomy of the genus Barsochrista Singh & Kirti, 2016 (Lepidoptera, Erebidae, Arctiinae)
No full textFIGURES 7–9. Barsochrista spp.: male genitalia. 7, B. kishidai, dark form, S India, slide NHMUK010313412 Volynkin (©NHM); 8, B. kishidai, pale form, S India, slide MWM 31563 Volynkin; 9, B. ocellata, Sri Lanka, slide NHMUK010313523 Volynkin (©NHM).Published as part of Ivanova, Maria S., 2017, On the taxonomy of the genus Barsochrista Singh & Kirti, 2016 (Lepidoptera, Erebidae, Arctiinae), pp. 180-184 in Zootaxa 4312 (1) on page 182, DOI: 10.11646/zootaxa.4312.1.9, http://zenodo.org/record/85227
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