Abstract
This article is devoted to a review of specimens identified as belonging to the genus Maraenobiotus Mrázek, 1893 reported for Bulgaria from the Rhodope and Rila Mountains under the name of Maraenobiotus vejdovskyi truncatus Gurney, 1932. Closer examination of the armature of the caudal rami and other morphological characteristics revealed significant differences between the specimens from these disjunctive populations and M. truncatus that had been originally described by Gurney (1932) from the United Kingdom. Based on these differences, the population from the Western Rhodope Mountains is described here as a new species, M. rhodopensis n. sp., and the population from the Rila Mountains is described here as M. rilaensis n. sp.
Highlights
The present study is a review of the material of the genus Maraenobiotus Mrázek, 1893 reported from the Rhodope and Rila Mountains (Bassamakov, 1969, 1973; Apostolov & Pesce, 1989; Apostolov, 2010)
This article is devoted to a review of specimens identified as belonging to the genus Maraenobiotus Mrázek, 1893 reported for Bulgaria from the Rhodope and Rila Mountains under the name of Maraenobiotus vejdovskyi truncatus Gurney, 1932
Bulgarian populations from the Rhodope and Rila Mountains belong to two new species of Mareanobiotus that differ in shape and size of the caudal rami and its main apical setae
Summary
The present study is a review of the material of the genus Maraenobiotus Mrázek, 1893 reported from the Rhodope and Rila Mountains (Bassamakov, 1969, 1973; Apostolov & Pesce, 1989; Apostolov, 2010). The most important differences include the structure of the caudal rami, the ornamentation of the somites and the armature formula of the swimming legs Based on these differences, the population from the Rhodope Mountains is described here as a new species. Future studies will reveal the presence of more species in all Bulgarian mountains Such studies will contribute to the diversity and species composition of this genus in Bulgaria, but will be helpful to clarify their systematic status and relationships. Bulgarian populations from the Rhodope and Rila Mountains belong to two new species of Mareanobiotus that differ in shape and size of the caudal rami and its main apical setae. This species was found inhabiting an underground stream in the Dushnika Cave (near the Iskrets Village)
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