Syphacia (Syphacia)
Creators: name: Weaver, H. J.
name: Smales, L. R.
Publisher: name: Zenodo
Year: 2008
Subjects: Biodiversity
Taxonomy
Animalia
Nematoda
Secernentea
Ascaridida
Oxyuridae
Syphacia

description: <i>Syphacia (Syphacia)</i> sp. 3 (Figs 21–22) <b>Material examined.</b> From the caecum of <i>Pseudomys hermannsburgensis</i> Ethabuka Station, Queensland (23 o 52.28'S, 138 o 28.49'E), July 2000, 12 females, AHC 34475, Mt. Leonard Station, Queensland (25 o 42'S, 140 o 37'E), 12.iv.1984, 18 females, AHC 34474. <b>Description. Female:</b> Small nematodes, cuticle with faint striations. Cephalic plate oval, constricted dorsally and ventrally between mouth opening and level of amphids and cephalic papillae which are close together laterally, not on edge of plate (Fig. 19). Mouth opening with 3 lips. Deirids not seen. Small cervical alae present, lateral alae absent. Length 1900–3450. Maximum width 148–193. Amphids 50 apart. Oesophagus length 195–300. Oesophageal bulb 73–85 in diameter. Nerve ring 95–140, excretory pore 225–420, vulva protruding through body wall, 420–733 from anterior. Tail 313–500 long. Eggs 105–127 long, 23–35 wide. <b>Remarks.</b> As discussed for the species described above, <i>Syphacia</i> sp. 3 belongs in the subgenus <i>Syphacia</i> Seurat, 1916. The females of <i>Syphacia</i> sp. 3 can be distinguished from all other females in the group of <i>Syphacia</i> spp. with similarly shaped oval cephalic plates, namely <i>S. (S.) abertoni</i>, <i>S. (S.) brevicaudata, S. (S.) pseudomyos</i> and <i>Syphacia</i> sp. 2, and all other species of <i>Syphacia</i> occurring in the region in having the vulva protruding through the body wall. The only other known species of <i>Syphacia</i> with this trait are <i>S. (S.) ohtaorum</i> Hasegawa, 1991 with a laterally stretched cephalic plate and <i>S. (S.) evaginata</i> Hugot &amp; Quentin, 1985 with an oval cephalic plate (Hasegawa 1991; Hugot &amp; Quentin 1985). <i>Syphacia</i> sp. 3 further differs from <i>S. (S.) ohtaorum</i> in having cervical alae and smaller eggs (105–127 by 23–35 compared with 128–139 by 34–40) (Hasegawa 1991). <i>Syphacia</i> sp. 3 has neither the prominent deirids nor the lateral alae found in <i>S. (S.) evaginata</i> and larger eggs (105–127 by 23–35 compared with 75 by 30) (Hugot &amp; Quentin 1985). <i>Syphacia (Syphacia)</i> sp. 3 appears to be sufficiently different from other known species, but this cannot be confirmed with a small sample size and more material, particularly males, will need to be collected.
description: Published as part of <i>Weaver, H. J. &amp; Smales, L. R., 2008, New species of Syphacia (Syphacia) Seurat (Nematoda: Oxyuridae) from Pseudomys species (Rodentia: Muridae) from central Australia, pp. 39-50 in Zootaxa 1775 (1)</i> on page 45, DOI: 10.11646/zootaxa.1775.1.3, http://zenodo.org/record/5124245
description: {"references": ["Hasegawa, H. (1991) Syphacia (Syphacia) ohtaorum n. sp. (Nematoda: Oxyuridae) from Mus caroli on Okinawa Island, Japan. Systematic Parasitology, 18, 221 - 226.", "Hugot, J. - P. &amp; Quentin, J. - C. (1985) Etude morphologique de six especes nouvelles on peu connues appartenant au genre Syphacia (Oxyuridae, Nematoda), parasites de rongeurs Cricetides et Murides. Bulletin du Museum National d'Histoire Naturelle Serie 4, 7, 383 - 400."]}