Four new species of Agraphydrus Régimbart, 1903 with additional faunistic record from China (Coleoptera, Hydrophilidae, Acidocerinae)

Abstract

Four new species of Agraphydrus Régimbart are described from China: A. pseudoniger sp. nov. from Shangyou County, Jiangxi Province, A. komareki sp. nov. from Shangchuan island, Taishan County, Guangdong Province, A. sabulosus sp. nov. from Fengkai, Guangdong Province, A. dapengensis sp. nov. from Dapeng peninsula, Shenzhen, Guangdong Province. Diagnosis and illustration of the new species are provided. The key given by Komarek and Hebauer (2018) to Chinese species of Agraphydrus Régimbart is updated.