Abstract
Twenty-six new species of Hydraenidae are described, including new species from Belize (2), Mexico (16), Panama (3), St. Vincent (1), and the U.S.A. (4). High-resolution digital images of the habitus and male genitalia of holotypes are given. New distribution data are provided for 70 species, and new habitus and aedeagal images are given for members of the subgenus Spanglerina: H. (Spanglerina) brevis Sharp, H. (Spanglerina) frondsicola Perkins, and H. (Spanglerina) ingens Perkins. The following new species are described: Hydraena (Holcohydraena) chandleri, H. (Hydraenopsis) belicollis, H. (Hydraenopsis) belilymba, H. (Hydraenopsis) bicandida, H. (Hydraenopsis) canalula, H. (Hydraenopsis) comicala, H. (Hydraenopsis) concatenata, H. (Hydraenopsis) guanajuatoensis, H. (Hydraenopsis) lenticula, H. (Hydraenopsis) multivillosa, H. (Hydraenopsis) panbrevis, H. (Hydraenopsis) panelephanta, H. (Hydraenopsis) pantitillata, H. (Hydraenopsis) pocilla, H. (Hydraenopsis) reducta, H. (Hydraenopsis) saintvincentensis, H. (Hydraenopsis) scintillasolata, H. (Hydraenopsis) spiralis, H. (Hydraenopsis) temascaltepecica, H. (Spanglerina) arcei, Ochthebius (Asiobates) cascadeus, O. (Asiobates) convexus, O. (Asiobates) invictus, O. (Asiobates) shepardi, O. (s. str.) bajaensis, O. (s. str.) explicitus. New distribution records are provided for 70 species. The species status of Ochthebius (Gymnochthebius) falli (Perkins) is reinstated. A very brief synopsis is given of the exocrine secretion delivery system (ESDS) as it relates to the behavior and morphology of hydraenid aquatic life.
Subject
Animal Science and Zoology,Ecology, Evolution, Behavior and Systematics
Reference12 articles.
1. Bilton, D.T., Jäch, M.A., Ribera, I. & Toussaint, E.F.A. (2022) Minute moss beetles in the Southern Hemisphere: Molecular phylogeny, historical biogeography and habitat shifts (Coleoptera: Hydraenidae). Systematic Entomology, 1–21. https://doi.org/10.1111/syen.12567
2. Brojer, M. & Jäch, M.A. (2011) Update on the hydraenid fauna of Costa Rica, with descriptions of six new species. Koleopterologische Rundschau, 81, 69–92.
3. Jäch, M.A. (1994) Descriptions of new species of Hydraenidae (Coleoptera) from Texas, Indiana, and Oklahoma, with faunistic and taxonomic notes on the family in Texas. The Coleopterists Bulletin, 48 (4), 301–308.
4. Perkins, P.D. (1976) Psammophilous aquatic beetles in southern California: A study of microhabitat preferences with notes on responses to stream alteration (Coleoptera: Hydraenidae and Hydrophilidae). The Coleopterists Bulletin, 30, 309–324.
5. Perkins, P.D. (1980) Aquatic beetles of the family Hydraenidae in the Western Hemisphere: classification, biogeography and inferred phylogeny (Insecta: Coleoptera). Quaestiones Entomologicae, 16, 3–554. [Available free from the Biodiversity Heritage Library website]