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 Limnebius angustulus (Casey) Limnocharis angustula Casey 1886:168 This rarely collected species was previously known from only seven specimens . The two new records below bring the total to 27 specimens , and the total localities to four. The known distribution is limited to Texas and Tamaulipas . New records: U.S.A. : Texas , Concan , Neal’s Lodge Area , Frio River , 1–2.x.1994 , leg. E. G. Riley (9 TAMU ); Bexar Co. , Leon Springs, ( Leon Creek ), 21.vii.1981 , leg. W. E. Steiner (9 NMNH ) .