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Issue: Vol. 4444 No. 4: 11 Jul. 2018
Type: Article
Published: 2018-07-11
DOI: 10.11646/zootaxa.4444.4.7
Page range: 471–483
Abstract views: 67
PDF downloaded: 2

Two new species of blue-eyed Trimma (Pisces; Gobiidae) from New Guinea

Curator Emeritus, Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, Ont., Canada M5S 2C6 Professor Emeritus, Department of Ecology & Evolutionary Biology, University of Toronto, Toronto, Ont., Canada M5S 1A1.
Conservation International Indonesia Marine Program, Jl. Dr. Muwardi No. 17, Renon, Denpasar 80235, Indonesia California Academy of Sciences, Golden Gate Park, San Francisco, CA 94118, USA
Pisces taxonomy Western Pacific coral reef gobies COI gene

Abstract

Two new species of Trimma are described from New Guinea, one at the southeastern end at Normanby Island (Milne Bay Province), the other from Cendrawasih Bay, West Papua, on the north-east coast. The dorsal surface of the eye of both species is blue in life, a characteristic not reported elsewhere in the genus. Although the two species look very similar in life, and both occupy similar mesophotic rubble habitats in the 50-70 m depth range, they are separated both genetically (7.7% pairwise genetic distance in COI) and morphologically. Trimma blematium has 16 pectoral fin rays, a branched 5th pelvic fin ray, and 7 papillae in row p, whereas T. meityae has 17–18 pectoral fin rays, an unbranched 5th pelvic fin ray, and 8 papillae in row p. In live specimens, the blue colour over the top of the eyes is much darker in T. blematium than in T. meityae. The type localities are separated by almost 2,000 km (straight-line distance).

 

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