<国立科博専報>五葉山ならびに早池峰山の翼手類

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Three species of bats were collected in Mt. Goyo and Mt. Hayachine in Iwate Prefecture during the 1967 survey by our Museum. They are Myocis ef. M. hosonoi IMAIZUMI, 1954,Barbastella leucomelas darjelingensis (HODGSON, 1855), both collected from the Akasaka Pass of Mt. Goyo (alt. 700m) in the evening of June 22,and Rhinolophus ferrumequinum mikadoi OGNEV, 1927,from a cave in Mt. Kami-Iwa (alt. 791m) about 3.6km southwest of Hayachine Shrine, Dake, Ohazama-machi, collected on the 30th of June. The Myotis specimen from Mt. Goyo resembles typical M. hosonoi and also but in less extent Myotis mystacinus KUHL, 1819. The Mt. Goyo specimen possesses a peculiar tragus similar to that of M. mystacinus, being widest near the base and convex at the posterior border, but is similar also to that of M. hosonoi in having the concave anterior border. The same specimen, however, has more whitish ventral fur in comparison with the latter two. The length ratio of facial portion to braincase of skull is 93.10%, which is not within the range of M+3 S.D. of M. hosonoi, and the breadth of braincase is evidently larger than that of M. hosonoi. Therefore, this specimen may represent a distinct but hitherto unknown subspecies of M. hosonoi. Barbastella leucomelas darjelingensis. a very rare subspecies, was caught in Mt. Goyo as the seventh record of its occurrence in Japan. Specimens identified as Rhinolophus ferrumequinum mikadoi were collected in Mt. Kami-Iwa. In the color of the upper part of body, however, the Mt. Kami-Iwa materials are slightly but clearly different from the typical subspecies. Their forearm length is evidently longer than that of Rhinolophus ferrumequinum nippon TEMMINCK, 1835.

著者

吉行瑞子
国立科学博物館

<国立科博専報>五葉山ならびに早池峰山の翼手類

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