A review of Indonesia’s Indian Ocean species of Lepidotrigla gurnards (Teleostei: Scorpaeniformes: Triglidae) with descriptions of three new species from southern coastal waters

Digital Gems > Biodiversity Library of Southeast Asia

Language

English

Creator

Gomon, M. F.
Kawai, T.

Source Title

The Raffles Bulletin of Zoology

Publication date

2018/11/08

Publisher

Dept. of Zoology, National University of Singapore, Singapore

Page

624–651

Content Type

Journal Article

Object Type

Text

Terms of Use

Open Access

Access Status

Open

Repository

NUS Libraries

Start File Page

624

End File Page

651

Volume

66

Issue

1

Call Number

QL319 NMB

Subject

Triglidae -- Asia -- Classification
Triglidae -- Asia -- Identification

Keyword

Lepidotrigla macracaina new species
Lepidotrigla tanydactyla new species
Lepidotrigla maculapinna new species
Lepidotrigla guentheri
Lepidotrigla japonica
taxonomy
ichthyology
fish
sea robins

Abstract

Trawl surveys along the Indian Ocean coasts of Indonesia between 1979 and 1981 and later in 2004 and 2005 yielded six species of gurnard referable to the speciose triglid genus Lepidotrigla. Publications treating the results of these surveys offered available names for two of the six, treating the others as undescribed. Based on an ongoing study, both of the named species were found to be incorrectly identified. Species collected during the surveys are re-identified with names, formal descriptions and accounts of distinctive features for three of the previously undescribed species provided. Lepidotrigla macracaina new species is distinctive in having the second spine of the first dorsal fin considerably longer than the first and third, a feature documented elsewhere in the genus only in the Japanese L. guentheri Hilgendorf, 1879. The new species differs from the latter as well as other species with spotted pectoral fins in having a distinctive pattern of bright blue spots arranged in four or five transverse bands on a charcoal to dark green field on the inner surface of the pectoral fin. Lepidotrigla tanydactyla new species differs from its congeners in having the uppermost free pectoral fin ray longer than the interconnected portion of the fin above it. Lepidotrigla maculapinna new species resembles the sympatric L. spiloptera Günther, 1880 in having the first free pectoral fin ray not quite or just reaching the tip of the pelvic fin but has the inner surface of the pectoral fin blackish with two transverse rows of large darkly ocellated milky blue spots rather than a greenish brown inner surface with a large black patch covering the lower portion and with prominent small white spots scattered evenly across the fin. A fourth undescribed species closely resembling L. japonica Bleeker, 1854 is shared with Australia and will be treated in a forthcoming study on Australian species as a member of a complex having extremely long fins.

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