Integrated Taxonomy Discovers Four New Species of <i>Grypoctonus</i> Speiser, 1928 (Diptera: Asilidae) from China

The genus <i>Grypoctonus</i> Speiser, 1928 (Diptera: Asilidae) is a fuzzy-looking assassin fly, and adults have only been observed in autumn and winter. Currently containing four described species, this genus is readily distinguished from other Chinese asilids by the presence of two <...

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Bibliographic Details
Main Authors: Haoyue Zhou, Ding Yang, Xuankun Li
Format: Article
Language:English
Published: MDPI AG 2025-07-01
Series:Insects
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Online Access:https://www.mdpi.com/2075-4450/16/7/722
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Summary:The genus <i>Grypoctonus</i> Speiser, 1928 (Diptera: Asilidae) is a fuzzy-looking assassin fly, and adults have only been observed in autumn and winter. Currently containing four described species, this genus is readily distinguished from other Chinese asilids by the presence of two <i>r-m</i> crossveins. Through integrative taxonomic analysis of over 200 specimens from multiple Chinese provinces, we combined morphological assessment with DNA barcoding and four species delimitation methods (ABGD, ASAP, mPTP, and GMYC). Four species are newly described: <i>G. aureus</i> <b>sp. nov.</b>, <i>G. sagittatus</i> <b>sp. nov.</b>, <i>G. solarius</i> <b>sp. nov.</b>, and <i>G. yongshani</i> <b>sp. nov.</b> (the latter described solely from morphological examination of historical specimens). Genetic analyses revealed distinct barcoding gaps, with an interspecific distance of 1.38–7.07% versus an intraspecific distance of no more than 0.92%. We revised the generic diagnosis, provided a distribution map, and a revised key to all known species of <i>Grypoctonus</i>.
ISSN:2075-4450