title: A revision of the Neotropical genus Austrohahnia Mello-Leitão (Araneae, Hahniidae).
abstract: The Neotropical genus Austrohahnia Mello-Leitão, 1942 is revised, comprising four species from Argentina. The genus is here transferred to the subfamily Hahniinae Bertkau, 1878 from Cybaeolinae Lehtinen, 1967. Austrohahnia is diagnosed by a single synapomorphy, short setae ventrally on the abdomen, in immature as well as adult stages. The type species A. praestans Mello-Leitão, 1942 is redescribed. Austrohahnia catleyi new species is described and illustrated based both sexes from the alder forests of northwestern Argentina. Austrohahnia melloleitaoi (Schiapelli & Gerschman, 1942) new combination was transferred from Hahnia C.L. Koch, 1841, the male is described and illustrated for the first time, and the female is redescribed. Austrohahnia isophthalma (Mello-Leitão, 1941) new combination is also transferred from Hahnia and considered a nomen dubium. New geographic records of studied species are provided.
authors.affiliation: National Research Council (CONICET), Instituto de Biología Subtropical, Universidad Nacional de Misiones (IBS, UNaM), Puerto Iguazú, Misiones, Argentina.; Email: grubio@conicet.gov.ar.
authors.forename: Gonzalo D
authors.initials: GD
authors.lastname: Rubio
authors.affiliation: Carste Consultores Associados, Rua Manoel Alonso Esteves, 93, Jd. Esmeralda, CEP 05589-020, São Paulo, Brazil.; Email: hahniidae@gmail.com.
authors.forename: Nancy F
authors.initials: NF
authors.lastname: Lo-Man-Hung
authors.affiliation: División Aracnología, Museo Argentino de Ciencias Naturales "Bernardino Rivadavia" (MACN-Ar, CONICET), Buenos Aires, Argentina.; Email: hernan.augusto.iuri86@gmail.com.
authors.forename: Hernán A
authors.initials: HA
authors.lastname: Iuri
mesh_terms: D063147:Animal Distribution; D000825:Animal Structures / Q000033:anatomy & histology / Q000254:growth & development; D000818:Animals; D001118:Argentina; D049628:Body Size; D017753:Ecosystem; D005260:Female; D065928:Forests; D008297:Male; D009929:Organ Size; D013112:Spiders / Q000033:anatomy & histology / Q000145:classification* / Q000254:growth & development