Paranoplocephala alaskensis Haukisalmi & Henttonen, 2007, n. sp.

• Main Authors: Haukisalmi, Voitto, Henttonen, Heikki
• Format: Other/Unknown Material
• Language: unknown
• Published: Zenodo 2007
• Subjects: Biodiversity; Taxonomy; Animalia; Platyhelminthes; Cestoda; Cyclophyllidea; Anoplocephalidae; Paranoplocephala; Paranoplocephala alaskensis; Arctic; Laakkonen; Alaska
• Online Access: https://doi.org/10.5281/zenodo.5657539; http://treatment.plazi.org/id/FB1787CDB5172C0DFF50FEDD58651D6A

Paranoplocephala alaskensis n. sp. (Fig. 5) Type host: Microtus miurus , Myomorpha, the singing vole. Type locality: Fortress Mountain, Gates of the Arctic National Park and Preserve (GAAR), northern Alaska, U.S.A., 68o34'19.7"N, 152o57'20.9"W. Site: Small intestine (duodenumn or jejunum). Deposited specimens: Holotype : MSB Endo 14 (field code AF 61775), from Microtus miurus (UAM 78448), collected on 30th July 2002 at Fortress Mountain, Gates of the Arctic National Park and Preserve (GAAR), northern Alaska, U.S.A. (68o34'19.7"N, 152o57'20.9"W). Collectors: H. Henttonen, K. Hildebrandt, J. Laakkonen and J. Niemimaa. Paratype : MSB Endo 15 (AF 61754), from Mi. miurus (UAM 78403), collected on 29th July 2002 at Fortress Mountain, GAAR, Alaska (68o34'48.4"N, 152o57'35.6"W). Collectors as for the holotype. Voucher specimens (all from Mi. miurus from Alaska): i) MSB Endo 17 (AF 58231, UAM 82045), Easter Creek near Lake Tulilik, GAAR, ii) MSB Endo 19 (AF 58239, UAM 82046), Lake Tulilik, GAAR, iii) MSB Endo 21 (AF 61903, UAM 79023), Nanushuk River, GAAR, iv) MSB Endo 20 (AF 61881, UAM 79018), Nanushuk River, GAAR, v) MSB Endo 16 (AF 48382, UAM 56607), Copter Peak, Noatak National Preserve. Description: Based on 12 specimens from Mi. miurus from various localities in Alaska, primarily from the GAAR (Tables 1 and 3). Fully gravid strobila 49–75 (62, n=7) long; maximum width (1.29–2.14, 1.75, n=9) attained in pregravid or gravid proglottids. Number of proglottids ca. 200 (n=2). Proglottids craspedote, but velum short or absent in well-relaxed specimens. Length/width ratio of mature proglottids 0.22–0.45 (0.36, n=16), of gravid proglottids marginally higher, 0.25–0.59 (0.38, n=29). Scolex simple, slightly rounded apically; width 0.42–0.55 (0.47, n=11). Suckers 0.15–0.22 (0.17, n=36) in diameter, directed antero-laterally, embedded in scolex. Neck 0.35–0.70 (0.57, n=9) long, not clearly distinct from scolex, tapering posteriorly, minimum width (0.20–0.30, 0.24, n=10) attained in region where segmentation first visible. ...