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Type: Article
Published: 2019-07-17
Page range: 419–441
Abstract views: 69
PDF downloaded: 39

Delimitation and description of three new species of Himalopsyche (Trichoptera: Rhyacophilidae) from the Hengduan Mountains, China

Goethe-University Frankfurt am Main, Institute for Ecology, Evolution and Diversity, Max-von-Laue-Strasse 13, Frankfurt am Main, Germany. Senckenberg Research Institute and Natural History Museum, Senckenberganlage 25, Frankfurt am Main, Germany.
Trichoptera caddisfly freshwater Himalaya mountain Sichuan STACEY stream taxonomy Yunnan


Three new species of the genus Himalopsyche (Trichoptera, Rhyacophilidae) from the Hengduan Mountains in China are described. Species delimitation was based on diagnostic features of genitalia, as well as molecular data from six genes analysed using the multi-species coalescent method STACEY. Formal descriptions are focused on genital morphology. Males of Himalopsyche viteceki sp. nov. are most similar to those of H. alticola and H. martynovi, and females are most similar to those of H. tibetana and H. velata. Himalopsyche immodesta sp. nov. is described based on a single male specimen and it most resembles the males of H. viteceki. Males of H. velata sp. nov. are most similar to H. tibetana, and females are most similar to those of H. maxima and H. tibetana. Diagnostic characters are found on segment IX and the superior and inferior appendages of male genitalia, and most notably on segment VIII in female genitalia. The newly discovered species underline the Hengduan Mountains as a potential source of yet undiscovered aquatic biodiversity.



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