engleski

Three new species of Drusus: Adult genital and larval characterisation

The caddisfly genus Drusus STEPHENS comprises roughly 100 species that inhabit mountain ranges in Europe, Asia Minor and the Caucasus. Here we present three new species of the genus Drusus and a hitherto unknown larva of Drusus macedonicus. All these species are closely related to Drusus discolor, Drusus romanicus romanicus and D. r. meridionalis, with which they share distinct features in feeding ecology, larval head capsule shape and adult morphology. The new species are clearly distinguished in both the larval and adult stages by unique features. Larvae can be identified by examination of frontoclypeal shape and surface structure. The adults can be separated from other species by details in the genital apparatus. Additionally all these species are clearly differentiated genetically from another and all previously known species of Drusus. Drusus krpachi n. sp., D. macedonicus, and D. sutjeskae n. sp. are micro-endemics of the western Balkan ranges ; D. bucegi n. sp. is an endemic of the Bucegi Mts in the south-eastern Carpathians.

Drusinae; morphology; larvae; endemics; Balkans

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