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Careproctus longidigitus, a new snailfish (Liparidae) from the southern Sea of Okhotsk
A new snailfish, Careproctus longidigitus , is described on the basis of four specimens collected off the Shiretoko Peninsula, Hokkaido, Japan. The new species is most similar to C. notosaikaiensis Kai, Ikeguchi, and Nakabo 2011 (Sea of Japan) and C. rausuensis Machi, Nobetsu, and Yabe 2012 (souther...
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Published in: | Ichthyological research 2020-01, Vol.67 (1), p.133-138 |
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Main Authors: | , |
Format: | Article |
Language: | English |
Subjects: | |
Citations: | Items that this one cites Items that cite this one |
Online Access: | Get full text |
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Summary: | A new snailfish,
Careproctus longidigitus
, is described on the basis of four specimens collected off the Shiretoko Peninsula, Hokkaido, Japan. The new species is most similar to
C. notosaikaiensis
Kai, Ikeguchi, and Nakabo
2011
(Sea of Japan) and
C. rausuensis
Machi, Nobetsu, and Yabe
2012
(southern Sea of Okhotsk), having similar numbers of dorsal- (50–53 in
C. longidigitus
vs. 52 and 50–55, respectively) and anal-fin rays (45–47 vs. 46–47 and 45–48, respectively), similar number of vertebrae (58–59 vs. 57–58 and 56–59, respectively), the pectoral fin with a distinct notch, trilobed teeth, chin pores in a single pit, and a moderately sized pelvic disk (disk length: 5.7–6.5% SL vs. 5.6–7.0% SL, 5.7–6.7% SL, respectively). However, the former differs from both in having fewer pectoral-fin rays (28–32 vs. 35–37 and 34–37, respectively), lower 4 or 5 pectoral-fin rays filamentous and nearly completely free of membrane (vs. strongly exserted), and a pale stomach (vs. black stomach). The large sequence divergences in COI between
C. longidigitus
and
C. notosaikaiensis
/
C. rausuensis
(0.093 and 0.080 in uncorrected
p
-distance, respectively) also support the validity of the new species. |
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ISSN: | 1341-8998 1616-3915 |
DOI: | 10.1007/s10228-019-00711-y |