A revised classification of the family Dasyatidae (Chondrichthyes: Myliobatiformes) based on new morphological and molecular insights Author Last, Peter R. Author Naylor, Gavin J. P. Author Manjaji-Matsumoto, B. Mabel text Zootaxa 2016 4139 3 345 368 journal article 10.11646/zootaxa.4139.3.2 51358935-98b0-4d89-a47f-e4341171e5b9 1175-5326 262765 DCF4220B-4A73-407C-837C-54DEAE29F435 Genus Taeniura Müller & Henle, 1837 Taeniura Müller & Henle, 1837:117 . Type species Trygon ornatus Gray, 1830 (= Raja lymma Forsskål, 1775 ); by monotypy. Definition . Small dasyatids (adults to 22–37 cm DW) characterised by the following: moderately robust, oval disc with pectoral-fin apex broadly rounded; snout obtuse and short (1.6–2.2 times combined orbit and spiracle length); eye large and protruding greatly; nasal curtain medium-sized, bilobed; mouth not small, with 2 large median oral papillae; tail firm and typically moderately short (length 1.5–1.7 times DW), its base broad and depressed; pelvic fins long and pointed, protruding slightly; dorsal fold rudimentary or forming a ridge; ventral fold deep with a long base; caudal sting positioned well posterior on tail (distance from pectoral-fin insertion to caudal-sting base 4.5–5 times interspiracular width); skin smooth and denticle band absent; 1–2 rows of very small median thorns in most adults, no other thorns on disc; tail smooth; strong dorsal colour pattern of vivid blue spots on disc (no dark masklike marking around eyes or black and white bands on tail); ventral surface white, disc margin yellowish; marine, Indo– West Pacific. Species . T. lymma (Forsskål, 1775) and an undescribed species. Remarks. Distinctive and locally abundant rays on coral reefs of the tropical Indo– West Pacific. An undescribed species occurs in Melanesia.