Abstract
Recently collected materials from Bosnia & Hercegovina revealed 5 new species of the genus Bythiospeum: B. blihensis n. sp., B. hrustovoensis n. sp., B. maroskoi n. sp., B. plivensis n. sp., and B. petroedei n. sp. In addition a new Islamia could be found, described here as I. steffeki n. sp. Photos of holotypes and paratypes are presented in addition to descriptions.
Highlights
The genus Bythiospeum Bourguignat, 1882 is distributed from France and Italy to S-Germany, Austria and as far as Asia Minor (Boeters 1998: 31). Radoman 1983 only mentioned two species from the Balkans, Paladilhiopsis robiciana (Clessin, 1882) and P. grobbeni Kuščer, 1928, both species living in Slovenia
The shells of the genus Iglica Wagner, 1927 look similar to Bythiospeum, but the outer lip of the aperture is straight and not sinuated, therefor we assigned the new species to the genus Bythiospeum
In addition the shells of the new species look similar to Bosnidilhia Boeters, Glöer & Pešić, 2013 but the shells of which are smaller and cylindrical and not elongated conical
Summary
The genus Bythiospeum Bourguignat, 1882 is distributed from France and Italy to S-Germany, Austria and as far as Asia Minor (Boeters 1998: 31). Radoman 1983 only mentioned two species from the Balkans, Paladilhiopsis robiciana (Clessin, 1882) and P. grobbeni Kuščer, 1928, both species living in Slovenia. The species of Paladilhiopsis Pavlović, 1913 are nowadays assigned to the genus Bythiospeum (Boeters 1998: 30). Widely distributed in the Balkans from Bosnia to the Near East and in France, Spain and Italy (Bodon et al 2001) and the species of which occur in underground water and springs. Of both genera mentioned above the species predominantly have been described by the shells only, because the subterranean living specimens do not reach the surface and only empty shells can be found. Descriptions and photos of these species are presented in this paper
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