Amphizoa insolens is a species of aquatic beetles. It is found in North America from Alaska to southern California.Nilsson, Anders N., and Bernhard J. van Vondel (2005), World Catalogue of Insects. Volume 7: Amphizoidae, Aspidytidae, Haliplidae, Noteridae and Paelobiidae (Coleoptera, Adephaga) Illinois Natural History SurveyKavanaugh, David H. (1986) A systematic review of amphizoid beetles (Amphizoidae: Coleoptera) and their phylogenetic relationships to other Adephaga, Proceedings of the California Academy of Sciences, vol. 44, no. 6Amphizoa insolens. California Beetles Project.
Adult A. insolens beetles are between 10.9 and 15 millimeters long. Their front tarsi lack well-developed grooves with hair-like setae.
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