ネパール産ヒマラヤヤンマ群の知見続報

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During the second half season of 1981,the experts in the Entomology Section, Department of Zoology, National Science Museum, Tokyo, made an extensive survey to Nepal. They made a good collection of Himalayan aeschnids paying special attention to the genus Cephalaeschna and its allies which totalled finally 65 specimens. Besides them, seven additional ones taken by Mr. Jun EMOTO became available. The first part of this paper is, consequently, a supplementary contribution to my previous reports (1981a, b), adding a number of interesting facts. For these fresh material I have to thank cordially to the painstaking field work of the survey members, namely, Prof. Shigeru AE (Nanzan University), Messrs. M. OWADA, Y. NISHIKAWA, M. SAKAI, M. TOMOKUNI and Dr. Shun-Ichi UENO. I am also very grateful to Mr. Jun EMOTO, Nanzan University, for some important material he obtained. Mr. Peter NIELSEN, Copenhagen Zoology Museum, was good enough to allow me to record Cephalaeschna klapperichi and C. orbifrons preserved in the Museum. In the second part of this article an attempt was made to compare the structure of male accessory genitalia of the second and third abdominal segments in the hope to confirm more precise generic characters, if any, of these taxonomically difficult aeschnids. Finally a diagnostic table was prepared to give a bird-eye view of the species of Cephalaeschna and its allied genera including those described from Chinese faunal limits (pp. 58-63).
国立科学博物館の論文

ネパール産ヒマラヤヤンマ群の知見続報

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