Venus (Journal of the Malacological Society of Japan)
Online ISSN : 2189-7697
Print ISSN : 1348-2955
ISSN-L : 1348-2955
Original Articles
Geographical Distributions of Sibling Species of Land Snails Bradybaena pellucida and B. similaris in the Boso Peninsula
Keiichi SekiShinichi InoueTakahiro Asami
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JOURNAL OPEN ACCESS

2002 Volume 61 Issue 1-2 Pages 41-48

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Abstract

We surveyed distributions of Bradybaena pellucida and B. similaris in the Boso Peninsula. B. pellucida is known to occur discontinuously in western Japan and in a limited area around Tateyama, at the southern end of the Boso Peninsula. B. similaris is cosmopolitan, distributed on most islands of Japan. The two species are closely similar to each other in shell and genital morphology, except for the color of the mantle surface, which is visible through the shell. We have found that B. pellucida predominantly occurs across the southern Boso Peninsula and is sympatric with B. similaris at several localities. B. similaris is dominant north of the range of B. pellucida.

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© 2002 The Malacological Society of Japan
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