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Forest surveys extend the range of the Krau woolly bat (Kerivoula krauensis) in the Malay-Thai Peninsula, Borneo and Sumatra

Abstract Kerivoula krauensis was formally described in 2007 and until recently was only known from tropical forest in central peninsular Malaysia. We report four new records, which, together with recent published collections, extend the known range for this species to peatswamps, lowland and montane forests in Borneo and Sumatra (Brunei and Indonesia), and further north on the Malay peninsula, including Thailand. External body measurements and cranial data match well with those from the type locality, although echolocation call parameters differ – most likely due to technological improvements in recording devices. The species remains patchily distributed and rarely encountered, despite substantial sampling effort.