Catalogue of Geadephaga (Coleoptera, Adephaga) of America, north of Mexico Author Bousquet, Yves Agriculture and Agri-Food Canada, Central Experimental Farm, Ottawa, Ontario, Canada bousquety1@yahoo.com text ZooKeys 2012 2012-11-28 245 1 1722 http://dx.doi.org/10.3897/zookeys.245.3416 journal article http://dx.doi.org/10.3897/zookeys.245.3416 1313-2970-245-1 FFFF52503A0AFF882450FFB66D45FF8E 578462 Genus Platypatrobus Darlington, 1938 Platypatrobus Darlington, 1938: 146. Type species: Platypatrobus lacustris Darlington, 1938 by original designation. Etymology. From the Greek platys (broad, wide, flat) and the generic name Patrobus [ q.v .], alluding to the body shape of adults ("form ... rather broad, depressed") of the Patrobus -like species [masculine]. Diversity. One species in boreal and northern temperate regions of North America. Identification. Bousquet and Grebennikov (1999) redescribed the species and illustrated the male and female genitalia. Taxonomic Note. With the exception of accessory setae on the pronotum, elytra, and mesosternum, this species is structurally very similar to those of Patrobus and possibly simply represents an offspring of Patrobus . The larva does not differ significantly from those of Patrobus (Bousquet and Grebennikov 1999).