Aedeagi of Helochares spp 53–55 H. sauteri d’Orchymont 53 dorsal, 54 lateral, 55 ventral and data of specimen 56–58 H. densus Sharp 56 dorsal 57 lateral 58 ventral and data of specimen 59–60 H. lentus Sharp 59 dorsal 60 lateral.

 
 
  Part of: Yang Z, Jia F, Tang Y, Jiang L (2021) Two new species of Helochares, with additional faunistic records from China (Coleoptera, Hydrophilidae, Acidocerinae). ZooKeys 1078: 57-83. https://doi.org/10.3897/zookeys.1078.73458