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| Pteragogus turdus Iino & Motomura, 2022 |
Abstract
Pteragogus turdus sp. nov. (Labridae) is described on the basis of 65 specimens (18.5–81.4 mm in standard length: SL) from the eastern Indian Ocean (Western Australia) and western Pacific Ocean. The new species is characterized by the following combination of characters: 10 dorsal-fin spines; 10–15 (modally 12, rarely 14 or 15) total gill rakers; dorsal profile of head straight; 10th dorsal-fin spine relatively short, its length 14.3–20.6% (mean 17.0%) of SL; longest pelvic-fin soft ray length 16.5–24.3% (20.4%) of SL; anterior two or three dorsal-fin spines with filamentous membrane tips in terminal phase males; anal-fin spines with relatively short filamentous membrane tips; anterior nostril with dark brown margin; three slightly curved bluish-gray vertical lines usually on cheek below eye when fresh; white stripe usually on head extending from snout tip to upper end of opercle through upper part of iris (distinct in life); large circular or elliptical dark brown blotch (subequal to eye size) margined with faint yellow or orange on upper opercle; a few small dark brown spots on mid-lateral surface of body; no black spots on abdomen; dark brown blotch on membrane between 1st and 2nd dorsal-fin spines (sometimes indistinct in life); dark brown spot usually below base of last dorsal-fin soft ray; pelvic fin generally pale reddish-white with a broad reddish-brown band medially.
Keywords: Taxonomy, Morphology, Distribution, Pteragogus cryptus
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| fresh preserved specimen of Pteragogus turdus sp. nov. BPBM 16195, holotype, 68.5 mm SL, Alite Reef, Solomon Islands (photo by J. Randall) |
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| Pteragogus turdus sp. nov. (specimen not collected). adult individual, Ishigaki-jima Island, the Ryukyu Islands (photo by K. Nishiyama) |
Pteragogus turdus sp. nov.
(New English name: Thrush Sneaky Wrasse;
new standard Japanese name: Tanuki-ohagurobera)
Distribution. Widely known from the eastern Indian Ocean (Western Australia) and western Pacific Ocean (Japan, Taiwan, Thailand, Vietnam, Philippines, Palau, Micronesia, Indonesia, Papua New Guinea, Solomon Islands, eastern Australia, New Caledonia, Fiji, Tonga, and Samoa) (Fig. 4).
Etymology. The specific name “turdus” is derived from Latin meaning “thrush”, in reference to the white stripe extending from the snout tip to the upper end of the opercle and an indistinct reticulated pattern on the body, which are reminiscent of the dusky thrush (Turdus eunomus).
Tomoka Iino and Hiroyuki Motomura. 2022. Pteragogus turdus, A New Species of Wrasse (Perciformes: Labridae) from the Indo-West Pacific Ocean. Ichthyological Research. DOI: 10.1007/s10228-022-00875-0
【博物館】インド・西太平洋に広く分布するベラ科魚類の新種を発見、国内では屋久島以南に分布
ปลานกขุนทองขี้อาย (Cryptic wrasse) Pteragogus cryptus
