SEM micrographs: A, B Ancyronyx clisteri sp. nov. (male paratype from the type locality) C–F A. sarawacensis (female from the type locality). A Elytra and scutellum, anterior portion, dorsal view B same, detail of elytral surface, dorsal view C habitus, dorsal view D same, ventral view E head, pronotum and anterior portion of elytra, dorsal view F pronotum with reticulate surface structure, dorsal view.

  Part of: Kodada J, Jäch MA, Freitag H, Čiamporová-Zaťovičová Z, Goffová K, Selnekovič D, Čiampor Jr F (2020) Ancyronyx clisteri, a new spider riffle beetle species from Borneo, redescription of A. sarawacensis Jäch including a description of the larva and new distribution data for A. procerus Jäch using DNA barcodes (Coleoptera, Elmidae). ZooKeys 912: 25-64.