A cladistic approach for generic delimitation of Paracloeodes Day, Rivudiva Lugo-Ortiz & McCafferty, and Varipes Lugo-Ortiz & McCafferty (Ephemeroptera: Baetidae) Author Cruz, Paulo Vilela Author Salles, Frederico Falcão Author Hamada, Neusa text Insect Systematics & Evolution 2020 2020-03-10 51 2 256 275 journal article 10.1163/1876312X-00002199 43234c4b-40c9-4d1b-aa5f-51d222a421b2 1876-312X 3786794 217D79EE-A577-4B7F-8AB0-1107C9FC4857 Rhopyscelis singuil ( Nieto 2004 ) comb. n. Varipes singuil Nieto 2004: 169 ; Domínguez et al. 2006: 188 ; Castillo & Pérez 2011: 348 ; Gutiérrez et al. 2013: 295 . Material examined. One nymph on slide ( paratype ), ARGENTINA , Escaba , State of Tucuman , Rio Singuil , 5.viii.1999 , Molineri C. col. One nymph on slide ( paratype ), ARGENTINA , Salta , Dpto. Guachipas , Rio Grande de El Sauce , 15.ix.1998 , Domínguez E. , Molineri C. and Ubero cols, deposited at Museo Miguel Lillo – Argentina . Additional material not examined: Holotype (male nymph), Tucuman , ARGENTINA , river Medina , S26°32’27” . W65°01’45” , 860 m . 14.vi. 2001 , Moiineri , Manzo , Orce & Nieto cols, deposited at Museo Miguel Lillo - Argentina . Diagnosis. Male imago. The characters used in the generic section can also be used for specific identification. Mature nymph. 1) antennae long, 1.5 × length of head capsule; 2) presence of medial decline on distal margin of labrum; 3) maxillae with palp 1.5 × length of galealacinia; 4) lingua with a small rounded apical projection ( Fig. 35 in Nieto 2004 ); 5) glossa subcircular (Fig. 37 in Nieto 2004 ); 6) tarsal claws 0.36 × length of tarsi; 7) abdominal terga I and VIII dark brown. Distribution. Argentina .