A taxonomic review of Ptilomera from China, with descriptions of two new species (Hemiptera: Heteroptera: Gerridae)

The species of Ptilomera Amyot & Serville, 1843 from China are reviewed. Two new species, Ptilomera acutidentata sp. n. and Ptilomera valida sp. n., are described from Yunnan, China. Diagnoses and new distribution records are provided for four previously recorded species, i.e., Ptilomera burmana D. Polhemus, 2001, Ptilomera hemmingseni Andersen, 1967, Ptilomera hylactor Breddin, 1903, and Ptilomera tigrina Uhler, 1860. Photographs and line drawings of the habitus, diagnostic characteristics of both sexes, habitat and in-situ photographs are presented. A distribution map of Ptilomera in China is also provided.