Arostrilepis beringiensis (Kontrimavichus & Smirnova, 1991) Gulyaev & Chechulin 1997

• Main Authors: Makarikov, Arseny A., Galbreath, Kurt E., Hoberg, Eric P.
• Format: Other/Unknown Material
• Language: unknown
• Published: 2013
• Subjects: Biodiversity; Taxonomy; Animalia; Platyhelminthes; Cestoda; Cyclophyllidea; Hymenolepididae; Arostrilepis; Arostrilepis beringiensis; Arctic; Smirnova; Taymyr; Yukon; Barrow; Brooks Range; Lemmus sibiricus; Lemmus trimucronatus; Taymyr Peninsula; Yukon river; Alaska; Beringia
• Online Access: https://zenodo.org/record/6147208; https://doi.org/10.5281/zenodo.6147208

Arostrilepis beringiensis (Kontrimavichus & Smirnova, 1991) Gulyaev & Chechulin, 1997 (Fig. 8) Syn.: Hymenolepis beringiensis Kontrimavichus & Smirnova, 1991. Hosts in Nearctic: Lemmus trimucronatus (Richardson) and Synaptomys borealis (Richardson). Localities in Nearctic: Alaska- Barrow, Arctic Coastal plain; Brooks Range; eastern Beringia, Yukon Charley Rivers National Preserve. Material examined: Vouchers include 4 specimens in Synaptomys borealis: MSB Para 1227, 1228, 1229 (field numbers AF 49480 / cyt- b sequence and 49480 A in Berlese’s; 49481 / cyt- b sequence , 2 specimens, multiple slides) by H. Henttonen et al., from the Yukon Charley Rivers National Preserve, Alaska across the Yukon River from Glen Creek Cabin (65 o 18 ’ 9 ”N, 142 o02’ 14 ”W), 8 August 2001; MSB 1233, 1234 (AF 61601 B, 61601 C, 2 specimens) by H. Henttonen et al., from Gates of the Arctic National Preserve, Brooks Range, Alaska on unnamed lake off Koyukuk River (67 o 21 ’ 11 ”N, 150 o 51 ’00”W), 23 July 2002. Palearctic specimens: MSB 1235 (LEM 229 a and 229 b, 2 specimens) ex Lemmus sibiricus by V. Fedorov and G. Jarrell on the northwestern Taymyr Peninsula, Russia (ca., 75 o 34 ’N, 94 o 29 ’E), 24–26 June 1994; the specimen from this series (designated as LEM 117 / cyt- b sequence ) from the northwest Taymyr was not available as a voucher. See Appendix 1 for listing of additional identified voucher specimens from the Nearctic and Palearctic. Description: Based on 5 specimens. Fully developed strobila 145–196 mm long, with maximum width at pregravid or gravid proglottides, 1.5–1.8 mm. Scolex slightly compressed dorso-ventrally, 255–285 (270, n = 2) wide, clearly wider than neck. Suckers ovoid in surface view, 160–250 × 110–188 (198 × 149, n = 6), with thick walls, prominent (Fig. 8 A). Neck relatively long and narrow, 160–175 (170, n = 2) wide. Dorsal osmoregulatory canals thin, 1–3 (2.1, n = 8) wide, situated predominantly in same sagittal plane as ventral canals. Ventral osmoregulatory canals 40–65 (54, n = 8) wide. ...