6,902 research outputs found
Three new and a known species of Tylencholaimoidea (Nematoda: Dorylaimida) from Singapore
No full textAhmad, Wasim (2010): Three new and a known species of Tylencholaimoidea (Nematoda: Dorylaimida) from Singapore. Zootaxa 2505: 51-64, DOI: 10.5281/zenodo.19588
Oriverutus longicaudatus Peña-Santiago & Liébanas & Ahmad 2014
No full textOriverutus longicaudatus, originally described by Ahmad and Siddiqi (1997) from Cameroon, is an atypical species within its genus because of its apparently double guiding ring (see Ahmad and Jairajpuri’ s Fig. 3A) and long tail (108– 153 µm, c = 6.2–10.6, c' = 6.3–9.5). Andrássy (2002) regarded it as a junior synonym of O. macramphidius, but some relevant differences between the two species can be found to maintain tentatively a separate status for them, for instance neck length [289–386 µm, b = 3.4–3.7 in O. longicaudatus (n = 12) versus 237 µm, b = 5.3 in O. macramphidius (n = 1)] and vulva position (V = 48–51 versus V = 53).Published as part of Peña-Santiago, Reyes, Liébanas, Gracia & Ahmad, Wasim, 2014, Taxonomy of the genus Oriverutus Siddiqi, 1971 (Nematoda: Dorylaimida: Nordiidae), pp. 1253-1278 in Journal of Natural History 48 (21) on page 1264, DOI: 10.1080/00222933.2013.861942, http://zenodo.org/record/400689
Four new and one known species of Belondiroidea (Dorylaimida: Nematoda) from Japan
No full textAhmad, Wasim, Naz, Tabbasam (2010): Four new and one known species of Belondiroidea (Dorylaimida: Nematoda) from Japan. Journal of Natural History 44 (25-26): 1509-1530, DOI: 10.1080/00222931003690706, URL: http://dx.doi.org/10.1080/0022293100369070
Three new and a known species of the genus Proleptonchus Lordello, 1955 (Nematoda: Leptonchidae) with a diagnostic compendium of the genus
No full textAhad, Sumaya, Ahmad, Wasim (2016): Three new and a known species of the genus Proleptonchus Lordello, 1955 (Nematoda: Leptonchidae) with a diagnostic compendium of the genus. Zootaxa 4189 (1): 115-133, DOI: http://doi.org/10.11646/zootaxa.4189.1.
Two new and a known species of dorylaim nematodes (Dorylaimida: Nematoda) from Kaziranga National Park, Assam, India
No full textBaniyamuddin, Md., Ahmad, Wasim (2011): Two new and a known species of dorylaim nematodes (Dorylaimida: Nematoda) from Kaziranga National Park, Assam, India. Journal of Natural History 45 (47-48): 2965-2980, DOI: 10.1080/00222933.2011.626125, URL: http://dx.doi.org/10.1080/00222933.2011.62612
Taxonomy of the genus Tantunema Siddiqi, 1982 (Dorylaimida: Tylencholaimidae) with description of one new and two known species
No full textAhad, Sumaya, Ahmad, Wasim (2016): Taxonomy of the genus Tantunema Siddiqi, 1982 (Dorylaimida: Tylencholaimidae) with description of one new and two known species. Journal of Natural History 50 (27): 1669-1685, DOI: 10.1080/00222933.2016.1155670, URL: http://dx.doi.org/10.1080/00222933.2016.115567
FIGURE 5 in Description of two new and six known species of the genus Tylencholaimus de Man, 1876 (Nematoda: Dorylaimida) with a diagnostic compendium and key to species
No full textFIGURE 5. Tylencholaimus vulvulatus Rahman, Jairajpuri, Ahmad & Ahmad, 1987. A. Entire female; B. Entire male; C. Anterior region; D. Anterior end showing amphid; E. Pharyngeal region; F. Pharyngeal bulb; G. Female genital system; H. vulval region; I. Female posterior region; J. Male posterior region.Published as part of Ahad, Sumaya & Ahmad, Wasim, 2016, Description of two new and six known species of the genus Tylencholaimus de Man, 1876 (Nematoda: Dorylaimida) with a diagnostic compendium and key to species, pp. 451-490 in Zootaxa 4107 (4) on page 462, DOI: 10.11646/zootaxa.4107.4.1, http://zenodo.org/record/26774
FIGURE 2. Tantunema enigmatum n in Three new and a known species of Tylencholaimoidea (Nematoda: Dorylaimida) from Singapore
No full textFIGURE 2. Tantunema enigmatum n. sp. A: Anterior region. B: Anterior region showing stoma thickening. C: Expanded part of pharynx. D: Expanded part of pharynx showing thickened valvular chamber. E: Female genital system. F: Female posterior region. (scale bar = 10 um)Published as part of Ahmad, Wasim, 2010, Three new and a known species of Tylencholaimoidea (Nematoda: Dorylaimida) from Singapore, pp. 51-64 in Zootaxa 2505 on page 55, DOI: 10.5281/zenodo.19588
Oriverutoides Ahmad and Sturhan 2002
No full textOriverutoides The only and type species of this genus, Oriverutoides attenuatus from New Zealand, resembles some representatives of Oriverutus in the morphology of lip region with protruding papillae, attenuate odontostyle, opisthodelphic female genital system and tail shape. Ahmad and Sturhan (2002) originally distinguished it from Oriverutus in the more posterior location of DO, DN and amphid aperture (versus more posterior than usual), sclerotized cheilostom and the absence of cardiac cells. Re-examination of type material (three female paratypes) of Oriverutoides attenuatus (Figure 9) confirms the resemblance between this species and some representatives of Oriverutus. Unfortunately, the differences between them cannot be totally confirmed herein. On one hand, the position of the amphid aperture is quite posterior (Figure 9E, F), more than usually observed in Oriverutus, as mentioned by Ahmad and Sturhan (2002); besides, the aperture is a comparatively large oval, not a transverse slit as often occurs in Oriverutus species (Figure 2). On the other hand, the location of pharyngeal gland nuclei and their outlets is obscure in the three available specimens; and the existence of sclerotization in the cheilostomatal walls seems questionable since the best preserved female does not show any distinct differentiation in cheilostom (Figure 9A) whereas in another female, in a worse state of preservation, it is possible to distinguish two small granular bodies (Figure 9B) at both sides of the cheilostom, which might represent the inner core of the respective lips. Of course, the absence of cardiac glands is not a difference between Oriverutoides and Oriverutus (see above). Consequently, and taking also into consideration the geographical distribution of Oriverutoides, which is far from the current known range of Oriverutus, both genera are provisionally considered as valid and separate taxa.Published as part of Peña-Santiago, Reyes, Liébanas, Gracia & Ahmad, Wasim, 2014, Taxonomy of the genus Oriverutus Siddiqi, 1971 (Nematoda: Dorylaimida: Nordiidae), pp. 1253-1278 in Journal of Natural History 48 (21) on page 1266, DOI: 10.1080/00222933.2013.861942, http://zenodo.org/record/400689
Mononchida (Nematoda) from Silent Valley National Park, India
No full textNusrat, Tabinda, Anjum, Ashher, Ahmad, Wasim (2013): Mononchida (Nematoda) from Silent Valley National Park, India. Zootaxa 3635 (3): 224-236, DOI: 10.11646/zootaxa.3635.3.
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