Callionymus boucheti, a new species of dragonet from New Ireland, Papua New Guinea, western Pacific Ocean, with the description of a new subgenus (Teleostei: Callionymidae)

Ronald FRICKE

Abstract

Callionymus boucheti sp. nov. from northern New Ireland Province, Papua New Guinea, is described on the basis of seven specimens collected with dredges and trawls in about 72-193 m depth between northeastern New Hanover and off Kavieng. The new species is characterised within Margaretichthys subgen. nov. by a short head (3.5-3.7 in standard lenght); eye large (2.5-3.0 in head length); preopercular spine with a short, straight main tip, 5-7 curved serrae on its dorsal margin and a strong antrorse spine at its base, ventral margin smooth, slightly convex; first dorsal fin in male much higher than second dorsal fin, in female as high as second dorsal fin, with 4 spines, first spine with a long filament (male) or without a filament (female); second dorsal-fin distally straight, with 9 unbranched rays (last divided at base); anal fin with 8 unbranched rays (last divided at base); 21-23 pectoral-fin rays; caudal fin elongate, much longer in male than in female, nearly symmetrical (upper rays not much shorter than lower rays); no dark blotch near pectoral-fin base; first dorsal fin in male dark grey, anteriorly with oblique white streaks, posteriorly with white spots, in female also with a black blotch distally near third spine; anal fin distally black, margin of black area straight, black area wider in male than in female; caudal fin in male with 18-22 vertical streaks (in female with 8-11 vertical streaks); pelvic fin pale, without spots. The new species is compared with similar species. A key to the five species of Margaretichthys subgen. nov. is presented.

Keywords

Dragonets, New species, New subgenus, Checklist, Identification key, New Guinea.

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References

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