Published April 24, 2018
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Parmaturus nigripalatum n. sp., a new species of deep-sea catshark (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from Indonesia
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Description
Ebert, David A. (2018): Parmaturus nigripalatum n. sp., a new species of deep-sea catshark (Chondrichthyes: Carcharhiniformes: Scyliorhinidae) from Indonesia. Zootaxa 4413 (3): 531-540, DOI: 10.11646/zootaxa.4413.3.7
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Identifiers
- URL
- https://www.checklistbank.org/dataset/30193
- LSID
- urn:lsid:zoobank.org:pub:7B5A5CDE-E4D3-402D-99C6-BDF5585EA69D
- LSID
- urn:lsid:plazi.org:pub:FE24FF84886AFF91FFC30D51B63FFF94
- URL
- http://publication.plazi.org/id/FE24FF84886AFF91FFC30D51B63FFF94
References
- Parmaturus albipenis was described from a single adult male (415 mm TL) collected off New Caledonia (Seret & Last, 2007), but it can be easily separated from P. nigripalatum n. sp. by the absence of an enlarged caudal crest of dermal denticles along the upper dorsal and ventral margins vs presence; a lower precaudal vertebral count (79 vs 90), a much higher upper tooth count (>130 vs 52); a first dorsal fin originating less than one-half its body length (46.2% TL) vs more than half its body length (53.8% TL); dorsal fins similar in size vs second dorsal being noticeably larger; anterior margins of both dorsal fins similar in length vs second dorsal fin anterior margin longer than first; lower labial furrows longer than uppers vs labial furrows of similar length; and a whitish colored mouth roof vs blackish mouth roof.
- Parmaturus nigripalatum n. sp. differs from P. albimarginatus, which was described from a single adult male (577 mm TL) collected off New Caledonia (Seret & Last, 2007) by a total upper and lower tooth count that is much lower (52/48 vs 92/92); a slightly lower precaudal (90 vs 95) and total vertebral (130 vs 136) counts; prepelvic length longer (49.3% vs. 46.9% TL); preanal length longer (62.2% vs. 59.1% TL); longer snout-vent length (51.6% vs. 49.7% TL); greater eye height (2.1% vs. 0.5% TL); a longer prenarial (4.7% vs. 3.7% TL); a narrower head width (10.8% vs. 12.9% TL); labial furrows about equal vs lowers longer than uppers; and darker colored posterior margins of dorsal, caudal and anal fins, compared to white margins in P. albimarginatus.
- Parmaturus nigripalatum n. sp. differs from P. bigus, described from a single adult female collected off northeastern Australia, south of Saumarez Plateau (Seret & Last, 2007) by a lower upper tooth count (52 vs 120); lower precaudal (90 vs 102) and total (130 vs 144) vertebral counts; shorter precaudal length (75.6% vs. 84% TL); greater first and second fin dorsal bases (6.5% vs. 4.9% TL and 8.6% vs. 7.3% TL); longer first and second dorsal fin anterior margins (8.6% vs. 5.2% TL and 10.8% vs. 9.3% TL, respectively); shorter pelvic-anal space (7.0% vs. 8.1% TL); longer anal fin length (11.5% vs. 9.7% TL); narrower dorsal-caudal space (2.0% vs. 5.7% TL); longer preventral caudal-fin margin (12.4% vs. 7.3% TL); smaller spiracle (0.3% vs. 0.7% TL); wider mouth (9.0% vs. 6.7% TL); near equal length for upper and lower labial furrows compared to lower furrow being considerably longer that upper furrow; and mouth roof color that is blackish compared to the greyish color found in P. bigus. The overall body coloration (after preservation) between the new species and P. bigus is also informative, with former being uniform dark brown with slightly darker dorsal, pelvic and anal fins compared to the uniform plain yellowish brown, with slightly paler fin margins.