title: New species ofBidessonotusRégimbart, 1895 with a review of the South American species (Coleoptera, Adephaga, Dytiscidae, Hydroporinae, Bidessini).
abstract: The South American species of the New World genusBidessonotusRégimbart, 1895 are reviewed with descriptions of seven new species. This brings the total number of validBidessonotusspecies to 37, making it the largest Bidessini genus in the New World. The new species areBidessonotus annaesp. n.(Venezuela),Bidessonotus josiahisp. n.(Venezuela),Bidessonotus palecephalussp. n.(Venezuela),Bidessonotus reductussp. n.(Venezuela),Bidessonotus septimussp. n.(Venezuela),Bidessonotus spinosussp. n.(Venezuela), andBidessonotus valdezisp. n.(Guyana, Suriname). New distribution records are provided for many other South AmericanBidessonotusspecies. The main diagnostic features ofBidessonotusspecies are in the male genitalia, and these are illustrated for all South American species. Diagnostic features, distributions (including distribution maps), and additional comments are provided for all South American species.
authors.affiliation: Department of Biology and Museum of Southwestern Biology, University of New Mexico, Albuquerque, NM 87131-0001 USA.
authors.forename: Kelly B
authors.initials: KB
authors.lastname: Miller
keywords: Bidessonotus; Coleoptera; Dytiscidae; Neotropical; Water beetles; classification; taxonomy