title: A new species of Luchoelmis Spangler & Staines (Coleoptera: Elmidae) from Argentina and its probable larva.
abstract: A new species of riffle beetle from southwestern Argentina, Luchoelmis kapenkemkensis, is described. Its diagnostic characters are illustrated and the key for the identification the species of the genus is updated. A larva, very likely belonging to this species, is also described and compared to other related larvae.
authors.affiliation: CONICET-LIESA, Laboratorio de Investigaciones en Ecología y Sistemática Animal, Universidad Nacional de La Patagonia, San Juan Bosco, Sarmiento 849, 9200, Esquel, Chubut, Argentina.; Email: hydrophiloidea@yahoo.com.ar.
authors.forename: Miguel
authors.initials: M
authors.lastname: Archangelsky
authors.affiliation: CONICET-LIESA, Laboratorio de Investigaciones en Ecología y Sistemática Animal, Universidad Nacional de La Patagonia, San Juan Bosco, Sarmiento 849, 9200, Esquel, Chubut, Argentina.; Email: unknown.
authors.forename: Cecilia
authors.initials: C
authors.lastname: Brand
mesh_terms: D000825:Animal Structures / Q000033:anatomy & histology; D000818:Animals; D001118:Argentina; D001517:Coleoptera / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development; D005260:Female; D007814:Larva / Q000033:anatomy & histology / Q000145:classification / Q000254:growth & development*; D008297:Male