A new species and notes on Perlidae (Plecoptera) from Paraná and Santa Catarina States, southern Brazil Author Novaes, Marcos Carneiro Author Bispo, Pitágoras Da Conceição text Zootaxa 2014 3765 5 458 468 journal article 46397 10.11646/zootaxa.3765.5.4 f68a1568-2ace-4dec-9106-981fc9c19db5 1175-5326 224672 B759B46B-9769-40F9-844B-BD6DB7A9351A Anacroneuria debilis ( Pictet, 1841 ) Figs. 1–5 . Perla (Perla) debilis Pictet, 1841 : 255 ; Anacroneuria debilis , Zwick, 1972 : 1155 ; Zwick, 1973 : 486 ; Froehlich, 2002 : 76 ; Baldin et al ., 2013 : 392 . Material examined. BRAZIL (BR), Santa Catarina (SC), Nova Teutonia: 12 males , xi.1980 , Fritz Plaumann ( DZUP ); 1 male , 7.x.1955 (Smithsonian Institution National Museum of Natural History—NMNH); 5 males , 27 females , i.1975 ( NMNH ). Paraná (PR), Foz do Iguaçu, Cataratas: 1 female , 8.iii.1968 , W. L. & J. G. Peters ( NMNH ). Remarks. The redescriptions and comments about this species can be found in the papers of Zwick (1972 , 1973 ), Froehlich (2002) and Baldin et al. (2013) . The adult males studied here have a forewing length of 11.1–12.1 mm . The structure of the penial armature ( Figs. 3–5 ) agrees with Zwick (1972) and Baldin et al. (2013) . However, in several of the above listed males, the penial armature is slightly smaller and has a stronger dorsal inclination apically. The penial differences at this time are accepted as variation occurring in A. debilis . However, study of additional material from different localities is needed to ascertain if cryptic species are involved.