Nematodes from Rajasthan, India. 1. Six new species of Dorylaimida

Nematology ◽  
2001 ◽  
Vol 3 (2) ◽  
pp. 113-127 ◽  
Author(s):  
Qaiser Baqri ◽  
Padma Bohra
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Female Reproductive System ◽  
Female Tail

AbstractSix new species of the order Dorylaimida are described from Rajasthan, India: Mesodorylaimus kauli sp. n., 1.00-1.14 mm long, odontostyle 11-13 μm, female tail convex-conoid with elongated dorsally bent tip, male with 40-42 μm long spicules and ten to 11 regularly spaced ventromedian supplements; Mesodorylaimus bhansalii sp. n., 1.07-1.33 mm long, odontostyle 11-14 μm, female tail 5.3-5.4 anal body diam. long, male with 35-37 μm long spicules and 14-15 contiguous ventromedian supplements; Kochinema farodai sp. n., 0.96-1.18 mm long, well set off lip region, amphidial apertures prominent, odontostyle 17-19 μm, guiding ring one lip region diam. (LRD) from anterior end, tail 28-32 μm long, convex-conoid with rounded terminus; Kochinema caudatum sp. n., 0.81-0.95 mm long, well set off lip region, odontostyle 35-38 μm, odontophore 36-38 μm, guiding ring 2.1 LRD from anterior end and convex conoid tail with rounded tip; Tylencholaimus nagauriensis sp. n., 0.64-0.74 mm long, characterised by having perioral region disc-like, odontostyle 8-9 μm, monoprodelphic female reproductive system and anteriorly directed vagina; Tylencholaimus annulatus sp. n., distinct from all the known species of the genus in having coarsely striated inner cuticle giving an appearance like the species of Tylenchida, characterised by L = 0.50-0.59 mm, odontostyle 10-12 μm, odontophore 13-15 μm, amphidelphic female reproductive system and convex-conoid tail with rounded tip.

Studies on the morphology of Macrolaimus arboreus Truskova & Eroshenko, 1977 (Rhabditida: Chambersiellidae) from Iran

Nematology ◽  
2018 ◽  
Vol 20 (5) ◽  
pp. 441-447 ◽  
Author(s):  
Ebrahim Shokoohi ◽  
Hadi Panahi ◽  
Hendrika Fourie ◽  
Joaquín Abolafia
Keyword(s):  
Body Length ◽  
Excretory Pore ◽  
Reproductive System ◽  
Tail Length ◽  
The Body ◽  
Female Reproductive System ◽  
Female Tail ◽  
Length Measurements

Summary A population of Macrolaimus arboreus was collected from the rhizosphere of pine in Iran. This population of M. arboreus is characterised by the body length, 800-1010 μm in females, lip region with six seta-like papillae directed anteriad, stoma nearly as long as wide (9-11 × 7 μm), with cheilostom slightly longer than gymnostom and cheilorhabdia and gymnorhabdia well-developed, pharyngeal corpus 1.8-2.0 times the isthmus length, with slightly swollen metacorpus, excretory pore located at isthmus level, female reproductive system monodelphic-prodelphic reflexed with short post-vulval uterine sac, female tail conical (57-67 μm, c = 13.7-15.0, c′ = 3.5-3.8), ending in an acute tip which is weakly curved dorsad, and phasmids at 54-60% of tail length. Measurements and illustrations, including SEM, are provided.

New mouthless nematode of the genus Parastomonema Kito, 1989 (Nematoda: Siphonolaimidae) from a mangrove forest on the coast of Thailand, and erection of the new subfamily Astomonematinae within the Siphonolaimidae

Zootaxa ◽  
2006 ◽  
Vol 1177 (1) ◽  
pp. 39 ◽  
Author(s):  
KENJI KITO ◽  
CHITTIMA ARYUTHAKA
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Mangrove Forest ◽  
Type Species ◽  
Alimentary Canal ◽  
Diagnostic Feature ◽  
Female Reproductive System ◽  
Muddy Sediments ◽  
Short Body ◽  
A New Species

A new species of mouthless nematode Parastomonema papillosum sp. nov. was described based on specimens collected in muddy sediments of a mangrove forest in Samut Songkhram, Thailand. Parastomonema papillosum sp. nov. is the second species of the genus and differs from the type species P. fijiense Kito, 1989 in having short body length (1.5–3.0 mm), short cephalic setae (1.5–2.6 µm), and a weakly cuticularized gubernacular apophysis in the male. Astomonematinae subfam. nov. was erected for the two mouthless genera Astomonema and Parastomonema in the Siphonolaimidae based on the diagnostic feature of a degenerate alimentary canal and female reproductive system with paired ovaries.

Luciola leii sp. nov., a new species of aquatic firefly (Coleoptera: Lampyridae: Luciolinae) from mainland China

2006 ◽  
Vol 138 (3) ◽  
pp. 339-347 ◽  
Author(s):  
Xinhua Fu ◽  
Lesley Ballantyne
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Mainland China ◽  
Hubei Province ◽  
Female Reproductive System ◽  
A New Species

AbstractA new species of aquatic firefly, Luciola leiisp. nov., from Hubei Province in mainland China is described from males, females, and larvae. It is the fifth species of aquatic firefly recorded from China, and it differs significantly from Luciola substriata Gorham. Cuticular plates in the female reproductive system (bursa) are described and their possible functions are discussed.

Description of Bathynema nodinauti gen. n., sp. n. and four new Trophomera species (Nematoda: Benthimermithidae) from the Clarion-Clipperton Fracture Zone (Eastern Tropic Pacific), supplemented with the keys to genera and species

Zootaxa ◽  
2009 ◽  
Vol 2096 (1) ◽  
pp. 173-196 ◽  
Author(s):  
DMITRY M. MILJUTIN ◽  
MARIA A. MILJUTINA
Keyword(s):  
New Species ◽  
Body Length ◽  
Reproductive System ◽  
Fracture Zone ◽  
Body Part ◽  
Total Body Length ◽  
Female Reproductive System ◽  
Clipperton Fracture Zone ◽  
Total Body ◽  
Clarion Clipperton Fracture Zone

Seven specimens of the family Benthimermithidae from the Clarion-Clipperton Fracture Zone (Eastern Tropic Pacific), from the depths 4,800–5,040 m, were examined. Bathynema nodinauti gen. et sp. n. is described. The new genus differs from other genera of Benthimermithidae by the presence of an inner pharyngeal lumen. Four new species of Trophomera are also described. Body length of female of T. elegantis sp. n. approximately 1.5 mm; body cylindrical, anterior and posterior ends in shape of rounded cone; cephalic setae 2.0–2.5 μm long; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 1/6 of total body length; ovaries reflected; diameter of mature eggs 17 μm; males not found. Body length of female of T. minutissima sp. n. 0.9 mm; body cylindrical, with thickest body part at anterior half of body; anterior and posterior ends rounded; cephalic setae 1.5 μm long; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 1/3 of total body length; ovaries reflected; size of mature eggs 24x23 μm; males not found. Body length of female of T. pacifica sp. n. 5.4 mm; body cylindrical, anterior end rounded; posterior end conical, with thick conical terminal spine 81 μm long, showing granular core; cephalic setae 2.5 μm long inserted in tiny pits; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 2/3 of total body length; ovaries outstretched; size of mature eggs 34x20 μm; males not found. Body length of female of T. senckenbergi sp. n. 1.6 mm; body fusiform; anterior and posterior ends in shape of a cone with rounded tip; cephalic setae 2 μm long; trophosome consisting of 1 row of cells; female reproductive system didelphic, amphidelphic, occupying approximately 1/6 of total body length; ovaries non-reflected; males not found. The new finding of T. marionensis is recorded. One rest specimen (in bad condition) of a new species is described as a morphotype. A dichotomous key to the genera of the Benthimermithidae and tabular keys to Trophomera species are presented.

scholarly journals Studies on the Stenothemus harmandi species-group (Coleoptera, Cantharidae), with descriptions of two new species from China

2021 ◽  
Vol 9 ◽  
Author(s):  
Shujuan Ge ◽  
Xingke Yang ◽  
Haoyu Liu ◽  
Yuxia Yang
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Species Group ◽  
Female Reproductive System ◽  
Specific Level ◽  
Group Characters ◽  
Two New Species ◽  
Internal Genitalia ◽  
First Time

The Stenothemus harmandi species-group has 10 species at present. They are S. harmandi (Bourgeois, 1902) (located in N. India, Nepal); S. holosericus Švihla, 2005, S. orbiculatus Švihla, 2005 and S. subnitidus Švihla, 2005 (N. India); S. distortirudis Y. Yang & X. Yang, 2014, S. laticollis Y. Yang & X. Yang, 2014, S. parallelus Y. Yang & X. Yang, 2014 and S. septimus Y. Yang & X. Yang, 2014 (China: Xizang); S. fugongensis Y. Yang & X. Yang, 2014 (China: Yunnan) and S. leishanensis Y. Yang & X. Yang, 2014 (China: Guizhou). In the present study, two previously-known species are classified into this species-group, S. dentatus Wittmer, 1974 and S. alexandrae Švihla, 2004, of which the latter as a subspecies of the former is upgraded to the specific level and another two new species are discovered and described. Two new species of the Stenothemus harmandi species-group are described, S. acuticollis sp. n. (China: Yunnan) and S. nigricolor sp. n. (China: Xizang), which are illustrated with habitus photos and aedeagi of males, abdominal sternites VIII and internal genitalia of females. S. alexandrae Švihla, 2004 stat. n. is upgraded from a subspecies of S. dentatus Wittmer, 1974 and the two species are classified into this species-group. Characters of the female reproductive system are described for the first time for the following species: S. distortirudis Y. Yang & X. Yang, 2014; S. laticollis Y. Yang & X. Yang, 2014; S. leishanensis Y. Yang & X. Yang, 2014; S. orbiculatus Švihla, 2005; S. septimus Y. Yang & X. Yang, 2014 and S. subnitidus Švihla, 2005. Meanwhile, some additional distribution information is added for previously-described species. A key for the identification of all species is updated.

Studies on the genus Paraphanolaimus Micoletzky, 1923 (Nematoda: Aphanolaimidae) with description of P. paraguayensis sp. n.

Nematology ◽  
2003 ◽  
Vol 5 (6) ◽  
pp. 793-807
Author(s):  
Oleksandr Holovachov ◽  
Dieter Sturhan
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Female Reproductive System ◽  
As Species ◽  
Tail Tip ◽  
One New Species ◽  
Species Inquirendae ◽  
Epidermal Glands ◽  
Emended Diagnosis

Abstract Two known and one new species of Paraphanolaimus are described, viz. P. behningi from Germany, P. anisitsi from Paraguay and Germany and P. paraguayensis sp. n. from Paraguay. Paraphanolaimus paraguayensis sp. n. is characterised by 0.84-0.94 mm long body, presence of 37-44 lateral epidermal glands, strongly sclerotised and broad cylindrical stoma, swollen tail tip; female reproductive system with developed spermathecae, straight vagina; male without neck setae, 16-19 tubular supplements, two precloacal and nine to ten caudal setae, spicules 32-33 μm long, arcuate, with oval manubrium and fusiform shaft, platelike gubernaculum. Paraphanolaimus indicus and P.micoletzkyi are considered as species inquirendae. An emended diagnosis and a revised classification of Paraphanolaimus are proposed and a key to the species of the genus is provided. Aphanonchus bayensis (Keppner, 1988) comb. n. is proposed for Paraphanolaimus bayensis Keppner, 1988.

Embryology and gonad development in Oscheius shamimi sp. n. (Nematoda: Rhabditida)

Nematology ◽  
2006 ◽  
Vol 8 (2) ◽  
pp. 211-221 ◽  
Author(s):  
Qudsia Tahseen ◽  
Syim-ul Nisa
Keyword(s):  
New Species ◽  
Life Cycle ◽  
Reproductive System ◽  
Gonad Development ◽  
Longitudinal Axis ◽  
Female Reproductive System ◽  
Lateral Field ◽  
Late Stages ◽  
A New Species ◽  
Posterior Elongation

AbstractA new species of Rhabditinae collected from compost, is described and illustrated together with observations on embryonic and post-embryonic development. Oscheius shamimi sp. n. is characterised by a medium-sized body (female: L = 0.76-1.52 mm, a = 12-20, b = 4.2-6.3, c = 6.8-13.8, c′ = 4.1-5.8, V = 45-51), finely annulated cuticle; slightly demarcated lip region; lips fused to form three doublets; six lines in lateral field; small stoma with isomorphic metastegostom; cylindrical pharyngeal corpus; slightly protruded vulval lips with subventral cuticular flap; long, proximally dilated, rectum; 53-61 μm long, robust spicules with long capitula having strongly cuticularised ventral walls; pseudopeloderan bursa with nine pairs of genital papillae in 1 + 1 + 1/3 + 3 + ph configuration and six to seven pairs of copulatory muscle bands. Oscheius shamimi sp. n. is amphimictic with a 1:1 sex ratio. The eggs are ovoid and smooth-shelled and measure 48-78 × 37-48 μm. Most eggs are laid in the late stages of embryonation. The embryonation time was 14-15 h at 25 ± 2°C. The genital primordium was orientated obliquely to the longitudinal axis and did not show division of primordial nuclei during the first moult. The didelphic female reproductive system was formed as a result of anterior and posterior elongation of the primordium while the monorchic reproductive system of the male developed from an anterior elongation of the primordium. The life cycle from egg to adult was completed in 3-3.5 days at 25 ± 2°C.

scholarly journals Litinium gludi sp. nov. (Nematoda, Oxystominidae) from Kermadec Trench, Southwest Pacific Ocean

2021 ◽  
Vol 748 ◽  
pp. 138-154
Author(s):  
Daniel Leduc ◽  
Zeng Qi Zhao
Keyword(s):  
New Species ◽  
Pacific Ocean ◽  
Reproductive System ◽  
Phylogenetic Analyses ◽  
Strong Support ◽  
Female Reproductive System ◽  
Deep Basin ◽  
Southwest Pacific ◽  
System A ◽  
Molecular Phylogenetic

Recent work on the taxonomy of nematodes in Southwest Pacific Ocean trenches has led to the discovery of taxa which so far appear to be restricted to the oceans’ deepest environments. Here, Litinium gludi sp. nov. is described based on specimens obtained from a deep basin within the Kermadec Trench at 9540 m water depth. The new species differs from other species of the genus in having a conico-cylindrical tail, papillose labial sensilla, and heart- or leaf-shaped amphideal fovea. Both SSU and LSU phylogenetic analyses provide strong support for the placement of the new species within a clade containing both Thalassoalaimus and Litinum, and within Oxystomininae, which is consistent with the structure of the female reproductive system with only one posterior ovary in this subfamily. Our molecular analyses also indicate that the new species is most closely related to Thalassoalaimus despite lacking a caudal capsule, the main trait characterizing the latter genus, and despite being most morphologically similar to Litinium, particularly in the unusual shape of the amphideal fovea. However, given the changing definitions of the closely-related genera Thalassoalaimus and Litinium in recent years, available GenBank sequences may have been misidentified, which makes the interpretation of molecular phylogenetic analyses problematic. Given the current morphological definitions of Litinium and Thalassoalaimus, we choose to place the new species within Litinium, despite the apparently contradictory findings of molecular phylogenetic analyses. The placement of Cricohalalaimus in a clade with Thalassoalaimus and Litinium in both SSU and LSU analyses indicates that this genus should be placed within the Oxystomininae and not the Halalaiminae as in the current classification. This new proposed grouping is consistent with variation in the structure of the female reproductive system, a feature which appears more taxonomically informative than amphid shape for subfamily-level classification.

A new acotylean flatworm, Armatoplana colombiana n. sp. (Platyhelminthes: Polycladida: Stylochoplanidae) from the Caribbean coast of Colombia, South America

Zootaxa ◽  
2006 ◽  
Vol 1162 (1) ◽  
pp. 53
Author(s):  
D. MARCELA BOLAÑOS ◽  
SIGMER Y. QUIROGA ◽  
MARIAN K. LITVAITIS
Keyword(s):  
New Species ◽  
South America ◽  
Reproductive System ◽  
Type Material ◽  
Female Reproductive System ◽  
Caribbean Coast ◽  
The Caribbean ◽  
Historia Natural ◽  
Rigid Walls ◽  
A New Species

Armatoplana colombiana n. sp. (Polycladida: Stylochoplanidae), a new species of acotylean flatworm from Colombia, is described. A. colombiana is characterized by 6–8 fleshy, anterior knobs, short nuchal tentacles, tentacular and cerebral eyes. A strongly muscularized, interpolated prostatic vesicle and a penis armed with a very long stylet places the species into the genus Armatoplana. The female reproductive system is characterized by the presence of a Lang’s vesicle and a sinuous vagina with rigid walls. Type material is deposited at the Museo de Historia Natural Marina de Colombia INVEMAR under INV-PLA 0019 and INV-PLA 0020 HS.

Studies on the genus Aphanolaimus de Man, 1880 (Nematoda: Aphanolaimidae) with description of two new species

Nematology ◽  
2006 ◽  
Vol 8 (2) ◽  
pp. 235-254
Author(s):  
Byeong-Yong Park ◽  
Oleksandr Holovachov ◽  
Dieter Sturhan
Keyword(s):  
New Species ◽  
Reproductive System ◽  
Gland Cell ◽  
Female Reproductive System ◽  
Lateral Field ◽  
Two New Species ◽  
De Man ◽  
First Time ◽  
Epidermal Glands ◽  
Ventral Gland

AbstractThree known and two new species of Aphanolaimus are described, viz. A. louisae, A. seshadrii, A. brasiliensis, A. aberrans sp. n. and A. vietnamicus sp. n. New data on the morphology and distribution of A. louisae, A. seshadrii and A. brasiliensis are given. The male of A. brasiliensis is described for the first time: it is characterised by the presence of one pair of neck setae, four tubular supplements, two precloacal and six caudal setae, 13-18 μm long spicules with oval manubrium and gradually narrowing shaft, platelike gubernaculum. Aphanolaimus aberrans sp. n. is characterised by a 495-681 μm long body, longitudinally striated cuticle, presence of 24-34 lateral epidermal glands, weakly sclerotised stoma, amphid with central elevation, lateral field starting on the third to seventh annule, oval ventral gland cell; female reproductive system with developed spermathecae, straight vagina without sclerotisations; male with one pair of neck setae, with two or three small tubular supplements and three or four caudal setae, 13-18 μm long spicules with oval manubrium and gradually narrowing shaft, plate-like gubernaculum. Aphanolaimus vietnamicus sp. n. is characterised by a 544-569 μm long body, longitudinally striated cuticle, presence of 19 lateral epidermal glands, weakly sclerotised stoma, amphid with central elevation, lateral field starting on 14th-18th annule, oval ventral gland cell; female reproductive system with developed spermathecae, straight vagina without sclerotisations; male with one pair of neck setae, with two tubular supplements and four caudal setae, 12 μm long spicules with oval manubrium and gradually narrowing shaft.

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