New parasitic fly species discovered in China
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Entomologists Chuntian Zhang and colleagues in China identified four new species of parasitic flies from the Drino subgenus after examining specimens collected from forests in northeastern, central, and southern China. The researchers reviewed specimens held in collections in China, Paris, and Washington, D.C. comparing them to recently collected flies. They focused on the anatomy of male genital structures to distinguish between closely related species, a method that overcame previous difficulties caused by reliance on unreliable external traits.
The newly named species, Drino liaoningensis, Drino uniseta, Drino oharai, and Drino meridionalis, were identified using detailed comparisons of over two hundred specimens. Each species possesses unique characteristics, such as specific bristle patterns or features of their cerci (appendages on the abdomen). The team meticulously photographed specimens and created detailed illustrations, including microscopic images of the male genitalia, to ensure accuracy and reproducibility.
This taxonomic revision increases the number of known Drino fly species in China to nineteen, and contributes to the global understanding of the genus, which now includes 127 species worldwide. Because these flies are parasitoids, killing insects like moths and butterflies as their larvae develop, accurate identification is crucial for effective biological pest control. The researchers published their findings openly in the Biodiversity Data Journal to provide a reliable reference for ecologists and entomologists.
