Abstract
A key to the subgenera and a classification of the species of Desmophachria (Coleoptera: Dytiscidae) into subgenera and groups is presented. The following new subgenera are described: Pachiridis (Type species D. iridis Young) Brazil: Hintonia (Type species D. ubangoides Young) Brazil; Portmannia (Type species D. portmanni Clark, 1862). New species are described as follows: D. (Pachiridis) iridis Brazil; D. (Pachiridis) aldessa Brazil, Trinidad; D. (Pachiridis) novacula Surinam; D. (Pachiridis) aureus Brazil, Surinam ; D. (Hintonia) ubangoides Brazil, Ecuador; D. (Hintonia) siolii Brazil ; D. (Hintonia) minuta Brazil. Members of the subgenus Desmopachria (s.str.) are divided into groups on the basis of male genitalia. D. (Hintonia) minuta is the smallest known Dytiscid water beetle measuring barely. 1.1 mm. in length.References
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