Pastinachus Ruppell 1829
| Main Authors: | Last, Peter R., Naylor, Gavin J. P., Manjaji-Matsumoto, B. Mabel |
|---|---|
| Format: | info publication-taxonomictreatment Journal |
| Terbitan: |
, 2016
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| Subjects: | |
| Online Access: |
https://zenodo.org/record/6085247 |
Daftar Isi:
- Genus Pastinachus Rüppell, 1829 Pastinachus (subgenus of Trigon) Rüppell, 1829:51. Type species Raja sephen Forsskål, 1775; by subsequent designation. Definition. Small to very large dasyatids (adults to 43–200 cm DW or more) characterised by the following: depressed to robust, rhombic disc with pectoral-fin apex angular to narrowly rounded; snout obtuse or broadly angular, and short to medium length (1.6–2.4 times combined orbit and spiracle length); eye small and protruding slightly; nasal curtain distinctly bilobed; mouth narrow to medium-width with 5 oral papillae; tail firm and long to very long (length 1.8–3.2 times DW), its base broad to very broad and noticeably depressed; pelvic fins large, protruding slightly beyond disc; dorsal fold absent; ventral fold deep to very deep with a long base; caudal sting positioned posteriorly on tail (distance from pectoral-fin insertion to caudal-sting base 3.5–4.6 times interspiracular width); denticles on dorsal surface of disc patchy, denticle band well developed, but with diffuse edges; 1–3 variably developed, pearl or heart-shaped mid-scapular thorns, no other thorns on disc; tail prickly but lacking enlarged thorns (except in Pastinachus stellurostris); plain coloured dorsally, ventrally white, disc margin often dark; marine/estuarine, Indo– West Pacific. Species. P. at er (Macleay, 1883), P. gracilicaudus Last & Manjaji-Matsumoto, 2010, P. sephen (Forsskål, 1775), P. solocirostris Last, Manjaji & Yearsley, 2005, and P. stellurostris Last, Fahmi & Naylor, 2010. Remarks. Until recently, thought to consist of a single, widespread Indo–Pacific species, Pastinachus sephen (Last & Stevens, 1994). Recent research (confirmed by molecular data) has demonstrated that the group is not monotypic, and P. s e ph e n is restricted to the northwestern Indian Ocean and another large stingray (P. a t e r) is more widespread.
- Published as part of Last, Peter R., Naylor, Gavin J. P. & Manjaji-Matsumoto, B. Mabel, 2016, A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights, pp. 345-368 in Zootaxa 4139 (3) on page 364, DOI: 10.11646/zootaxa.4139.3.2, http://zenodo.org/record/262765