Abstract
Morphology and DNA barcodes confirm a new chironomid species within the Rheocricotopus (Psilocricotopus) orientalis group (Diptera: Chironomidae). Rheocricotopus (Psilocricotopus) kongi Lin et Wang sp. n. is described and illustrated based on adult male from Hainan, China. Key to adult males of the R. orientalis group is given.
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