title: Prionohydrus, a New Genus of Noterini Thomson (Coleoptera: Noteridae) From South America With Three New Species and Its Phylogenetic Considerations.
abstract: A new genus of Noterini,PrionohydrusGómez and Miller gen. n., and three new species are described from South America:Prionohydrus matogrossensisGómez and Miller sp. n. from Brazil andPrionohydrus marcGómez and Miller sp. n. andPrionohydrus ubercornisGómez and Miller sp. n. from Venezuela. The new genus was scored for characters presented in a recent phylogenetic analysis of the family, and key morphological characters are illustrated, including male and female genitalia. A parsimony analysis of these data resulted in a single, most parsimonious solution, with members of the new genus resolved as sister toMesonoterusSharp with moderate support.Prionohydrusis similar toMesonoterusand can be distinguished from this and other Noterini based on a combination of the following: 1) distal attachment of protarsus to protibia; 2) posterior protibial spine present; 3) single, weakly curved, apical protibial spur present; 4) last abdominal tergum with large medial spine flanked by numerous setae; 5) posterior mesotibial spur strongly serrate; 6) anterior metatibial spur strongly serrate; 7) prosternal process narrow, rounded apically, and widest near the middle; 8) prosternum longitudinally broad and glabrous; 9) weak, angular setae along posterodistal margin of metafemur present; 10) pronotal bead moderately broad; 11) cluster of setae at apex of medial metacoxal lobe present; and 12) antenna of males expanded, from slightly incrassate to strongly incrassate.
authors.affiliation: Department of Biology, Museum of Southwestern Biology, University of New Mexico, MSC03 2020, Albuquerque, NM 87131-0001.
authors.forename: R Antonio
authors.initials: RA
authors.lastname: Gómez
authors.affiliation: Department of Biology, Museum of Southwestern Biology, University of New Mexico, MSC03 2020, Albuquerque, NM 87131-0001.
authors.forename: Kelly B
authors.initials: KB
authors.lastname: Miller
keywords: Neotropical; burrowing water beetle; morphology; taxonomy