A review of the Japanese Kateretidae fauna (Coleoptera: Cucujoidea) Author Hisamatsu, Sadatomo text Acta Entomologica Musei Nationalis Pragae 2011 2011-12-09 51 2 551 585 journal article 10.5281/zenodo.5329313 0374-1036 5329313 Genus Sibirhelus Kirejtshuk, 1989 Type species. Heterhelus corpulentus Reitter, 1900 , by original designation. Diagnosis. Body elongate oval, strongly convex. Antennae moniliform. Pronotum with lateral margins uniformly rounded; punctures on disc larger than eye facet; posterior angles obtusely angulate; basal margin nearly straight or with slight curvature. Male abdominal tergite VIII externally visible. Tarsal claws more or less expanded at the base. Ovipositor with short styli. Bionomics. Sibirhelus corpulentus was collected from flowers of Carex dispalata Boott (Cyperaceae) (see Bionomics of S. corpulentus below). Distribution. Siberia and Japan ( JELÍNEK & AUDISIO 2007 ). Note. Sibirhelus is a monotypic genus with only one species, S. corpulentus , occurring from Siberia to Japan .