Rauschoides
Rauschoides n. g. (Fig. 14) Etymology. The name of the new genus refers to the late Robert L. Rausch, a pioneer and eminent figure in the taxonomy and zoogeography of anoplocephalids and other cestodes of Arctic mammals. “ Rauschoides ” is feminine. Diagnosis. Strobila of moderate length and width;...
| Main Authors: | , , , |
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| Format: | Other/Unknown Material |
| Language: | unknown |
| Published: |
2014
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| Subjects: | |
| Online Access: | https://zenodo.org/record/5687000 https://doi.org/10.5281/zenodo.5687000 |
| Summary: | Rauschoides n. g. (Fig. 14) Etymology. The name of the new genus refers to the late Robert L. Rausch, a pioneer and eminent figure in the taxonomy and zoogeography of anoplocephalids and other cestodes of Arctic mammals. “ Rauschoides ” is feminine. Diagnosis. Strobila of moderate length and width; very flat, transparent. Scolex small, merging gradually with neck. Suckers slightly protruding, directed antero-laterally. Neck narrow and usually long. In well-relaxed specimens anterior strobila and neck prominently elongated, thread-like. Proglottids craspedote, but velum short. Length/width ratio of mature proglottids usually high (37–63 %). Genital pores either unilateral or frequently (and irregularly) alternating. Genital ducts pass dorsal to longitudinal osmoregulatory canals. Testes antiporal, anterior and antero-poral to ovary, extending beyond ventral longitudinal canals bilaterally. Testes mostly not overlapping ovary. Cirrus sac usually prominent, extending across antiporal longitudinal canals. Vagina tubiform, long, but shorter than cirrus sac. Seminal receptacle large, of variable shape (pyriform, elongate, irregularly ovoid). Ovary median, large, may fill whole space between ventral longitudinal canals. Vitellarium median with respect to ovary. Early uterus extensive, densely reticulated, ventrally overlapping ovary and other organs. In collared lemmings, Dicrostonyx spp. (Cricetidae: Arvicolinae) in Arctic Eurasia and North America. Type species: R. arctica (Rausch, 1952) n. comb. Andrya arctica Rausch, 1952 Paranoplocephala arctica (Rausch, 1952) Tenora, Murai & Vaucher, 1985 Other species: R. alternata (Haukisalmi, Wickström, Hantula & Henttonen, 2001) n. comb. Paranoplocephala alternata Haukisalmi, Wickström, Hantula & Henttonen, 2001 Holotype of R. arctica: USNPC 37356. Remarks. The comparison of Rauschoides with morphologically related genera is complicated by the fact that the former occurs as two distinct morphotypes corresponding to R. arctica and R. alternata. These morphotypes ... |
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