Xylochironomus Cranston newly recorded in the Oriental region (Diptera, Chironomidae), with description of three new species

Three new species of Xylochironomus Cranston are described here based on adult males from the Oriental region, specifically from South China and East Malaysia. The generic diagnosis for the adult male is emended, and a key to the males of known species is provided. This is the first formal record of Xylochironomus from the Oriental region, and indeed the first occurrence outside the Australian region, providing another representative in the Gondwana biogeographic clade.