First Records of the Blenniid Fishes, Petroscirtes springeri and Petroscirtes variabilis, from Japan

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Petroscirtes (Blenniidae, tribe Nemophini), comprising ten species, is widely distributed over the tropical and subtropical Indo-Pacific Region from the Red Sea and southern Africa to the Society and the Line islands (Smith-Vaniz, 1976). Petroscirtes mitratus (a senior synonym of P. elatus) and P.breviceps (syn. Dasson trossulus) have previously been reported from Japan. Araiand Ida (1975) illustrated a single specimen of P.breviceps (NSMT-P 18406), identified as Dasson (=Petroscirtes) sp., from Tanegashima Island, Japan.Arai and Ida (1975) noted that except for its color pattern, which closely matched that of Meiacanthus kamoharai, the specimen agreed well with P.breviceps. Petroscirtes breviceps has been reported as a possible mimic of Meiacanthus grammistes, and establishment of a second mimetic relationship with the closely related and allopatric M.kamoharai might be expected (Smith-Vaniz, 1976 and personal communication). Recently, four specimens of P. springeri Smith-Vaniz, 1976 and one specimen of P.valiabilis Cantor, 1850 were collected from southern Japan.These records represent northern range extentions from Taiwan to Japan for both species, and the second record of P. springeri. The methods of Smith-Vaniz (1976) were used for counts, measurements and definitions of cephalic sensory pores and cirri.Vertebral counts include precaudal + caudal number. Radiographs were used to count vertebrae, ribs, and dorsal and anal rays.Color pattern descriptions are from preserved specimens.Sex was determined by the shape of urogenital opening.
日本魚類学会の論文

First Records of the Blenniid Fishes, <I>Petroscirtes springeri</I> and <I>Petroscirtes variabilis</I>, from Japan

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