Three new species of Helicopsyche von Siebold (Trichoptera: Helicopsychidae) from Brazil Author Holzenthal, Ralph W. Author Blahnik, Roger J. Author Calor, Adolfo R. text Zootaxa 2016 4078 1 344 353 journal article 46781 10.11646/zootaxa.4078.1.29 c59a6000-9262-47b9-a672-6fd625f486da 1175-5326 262814 8377D13F-7C34-4CD6-9749-D5B9F804F25F Helicopsyche ( Feropsyche ) guara sp. nov. ( Figures 2 A–E) Material examined. Holotype male. BRAZIL . Santa Catarina: Rio Caeté, at entrance to Parque Ecológico Spitzkopf, 27°00.350’S , 49°06.650’W , el. 92 m , 28.xi.2003 , Holzenthal, Paprocki and Calor leg., UMSP 000120783 (pinned) ( MZSP ). Paratypes : Santa Catarina: same data as holotype , except, 2 males , 4 females (pinned) ( UMSP ), 1 male , 2 females (pinned) ( UFBA ); Parque Ecológico Spitzkopf, confl. Rio Ouro and Rio Caeté, 27°00.352’S , 49°06.693’W , el. 140 m , 3.iii.1998 , Holzenthal, Froehlich, and Paprocki leg., 3 males , 3 females (pinned) ( UMSP ); same, except 25.xi.2003 , Holzenthal, Paprocki, and Calor leg., 15 males , 8 females (pinned) ( UMSP ), 28 males , 54 females (alcohol) ( UMSP ); Ribeirão Gaspar, Belchior Alto, Gaspar, 26°48.373’S , 49°02.465’W , el. 120 m , 27.xi.2003 , Holzenthal, Paprocki, and Calor leg., 1 male , 4 females (pinned) ( UFBA ); Parque Ecológico Spitzkopf, Rio Caeté above 1st falls, 27°00.35’S , 49°06.70’W , el. 170, 26.xi.2003 , Holzenthal, Paprocki, and Calor leg., 1 male , 1 female (pinned) ( MZSP ); Minas Gerais: Parque Nacional Peruaçu, Rio Peruaçu, 15°06.674’S , 44°14.487’W , el. 590 m , 16.xi.2001 , Holzenthal, Paprocki, Blahnik, and Amarante leg., 3 males , 4 females (pinned), 5 males , 3 females (alcohol) ( UMSP ), 4 males (alcohol) ( UFBA ). Diagnosis. This new species is similar to H . timbira , H . cipoensis , and H . angeloi sp. nov. , mainly in the shape of the inferior appendage, which is clavate in all four species. Helicopsyche guara sp. nov. differs from the other three species in having an apically narrow basomesal process of the inferior appendage, which has only 5–6 short spine-like apical setae. It is also distinctive among these species in having segment X shallowly divided apically into 2 short, truncate lobes bearing a broad patch of apical setae, rather than a linear row. Description. Male . Overall color (pinned) nearly uniformly medium brown; dorsum of head with white setae, especially between antennae; antennae whitish basally, grading to pale brown apically; palps dark brown. Tibial spur formula 2, 4, 4. Forewing: length 4.5–5.2 mm (n = 10); covered with fine, short, brown setae, anal margin with light brown setae. Sternum VI process long, about as long as segment VI, tubular along its length, oriented posteroventrally, nearly straight in lateral view, with microtrichiae along length, apex tapering, with lamellae apicoventrally ( Fig. 2 E). Genitalia . Segment IX short ventrally; anteromesal margin well developed; lateral apodeme well developed, located midlaterally on segment ( Fig. 2 A). Segment X triangular, tapering to apex; in dorsal view shallowly divided apically into 2 short, truncate lobes; bearing 2 rows of 14–18 setae, apical setae slightly shorter than basal setae and covering apical lobes ( Fig. 2 B). Superior appendage originates dorsolaterally, setose, oval ( Fig. 2 A). Inferior appendage clavate, widest apically, with anterior margin very slightly concave and posterior margin convex; posterodorsal margin undulate, with long setae along apical margins ( Fig. 2 A); with a few setae on protuberant bases on mesal surface ( Fig. 2 C); basomesal lobe of inferior appendage well-developed, long, wide basally, tapering to narrow apex, bearing 5–6 short, spine-like setae on upper apical surface ( Figs 2 A, C); basal plate of inferior appendages nearly straight in lateral view ( Fig. 2 A), narrow along its length in ventral view, tapering apically ( Fig. 2 B). Phallus tubular, down-curved along its length; phallobase narrow, slightly inflated basally, narrow in the middle, apicoventral half sclerotized, subacuminate apically; endotheca a large, long, membranous lobe extending dorsally over endophallus; endophallic membranes extended laterally as rounded lobes; phallotremal sclerite small, oval ( Fig. 2 D). Etymology. The specific name “ guara ” is in reference to “Lobo-guará”, the Brazilian Portuguese common name for Chrysocyon brachyurus (Illiger, 1815) , the largest canid in South America , and an amazing character in the children’s book “Chapeuzinho Vermelho e o Lobo-Guará” written by Dr. Angelo B.M. Machado. Distribution. Brazil (Minas Gerais, Santa Catarina).