Contribution to the morphology of the Bulgarian stygobiont Truncatelloidea (Caenogastropoda)
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Department of Ecology and Environmental Conservation, University of Plovdiv
Department of Animal Reproduction, Anatomy and Genomics, Institute of Veterinary Science, University of Agriculture in Krakow
Department of Comparative Anatomy, Institute of Zoology and Biomedical Research, Jagiellonian University
Department of Malacology, Institute of Zoology and Biomedical Research, Jagiellonian University
Andrzej Falniowski   

Department of Malacology, Institute of Zoology, Jagiellonian University, Gronostajowa 9, 30-387 Cracow, Poland
Submission date: 2016-09-21
Final revision date: 2016-12-12
Acceptance date: 2016-12-29
Publication date: 2017-02-24
Folia Malacol. 2017;25(1):15–25
The paper deals with morphology of the representatives of an entirely stygobiont, molecularly distinct and ancient clade of Bulgarian Truncatelloidea. Ten nominal species of seven genera (two of them new: Devetakiola Georgiev and Stoyanovia Georgiev) are analysed; six of them (except four Pontobelgrandiella species) are re-described. The knowledge of subterranean stygobiont gastropods is still limited; cave-dwelling species are mostly known only from empty shells found on the surface. The study includes all the Bulgarian stygobiont truncatelloideans known not only from empty shells. Their shells, soft part pigmentation, female reproductive organs and penes are presented. The results are compared with fragmentary data from the literature.
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