近畿地方の廃坑で得られたメクラチビゴミムシ類の 2 新種

概要

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In the present paper, I am going to describe two new anophthalmic species of trechine beetles recently discovered in abandoned mine adits lying at the northern part of the Kinki District, Central Japan. Both the species belong to the kosugei complex of the group of Trechiama oni, and should have been included in the map showing the distribution of Trechiama in the Kinki District given on page 267 of my previous paper (UENO, 1980), if they had been known before its publication. And if this had been realized, the peripheries of the distributional ranges of the group of T. ohshimai and that of T. oni could have been demonstrated more precisely. The occurrence of one of the present new species in a mine adit at the northern tip of Osaka Prefecture is of particular importance from the zoogeographic view-point, since this mine is located on the line connecting the known ranges of the two different species belonging to the group of T. ohshimai. The abbreviations used herein are the same as those explained elsewhere (e. g., UENO, 1980,p. 196). Before going further, I wish to express my deep indebtedness to Messrs. Yoshiaki NISHIKAWA and Akira NOTO for their continuous support of my study.