New Neotropical and Nearctic species of water beetles in the genera Hydraena Kugelann and Ochthebius Leach, a key to North American genera and subgenera of the family, new distribution records, and a synopsis of ecology, behavior and morphology related to aquatic life (Coleoptera: Hydraenidae) Author Perkins, Philip D. text Zootaxa 2023 2023-11-07 5367 1 1 86 https://www.mapress.com/zt/article/download/zootaxa.5367.1.1/52225 journal article 10.11646/zootaxa.5367.1.1 1175-5334 10145106 5A1E5321-D2BA-4B92-BA23-A7C1CDBA5723 Hydraena ( Holcohydraena ) occidentalis Perkins Hydraena occidentalis Perkins 1980: 78 The new records below document two new localities, including the first record for Baja California , and a new depository for identified specimens of this species. The currently known distribution is from British Columbia , south thru Washington, Oregon and California to Baja California . New records: U.S.A.: California: Orange Co. , San Juan Canyon , 16.vii.1979 , leg. C. N. McKinnon (1 TAMU ); Mexico : Baja California , Sur , Sierra Laguna , La Laguna , 17 air mi. ENE Todos Santos !, 12–18.xii.1979 , leg. J. Doyen & W. Tschinkel (3 MCZ ) .