Alterosa, a new caddisfly genus from Brazil (Trichoptera: Philopotamidae) Author Blahnik Table Of Contents, Roger J. text Zootaxa 2005 2005-05-23 991 1 1 60 https://biotaxa.org/Zootaxa/article/view/zootaxa.991.1.1 journal article 10.11646/zootaxa.991.1.1 1175­5334 5046283 Alterosa tripuiensis , new species Fig. 25A–D This species is unlike any other species of Alterosa and easily diagnosed by the structure of the intermediate appendages, which are unique in forming a compact cluster of elongate spines. FIGURE 25. Alterosa tripuiensis , new species . Male genitalia: 25A—lateral view; 25B—dorsal view of segments IX and X; 25C—inferior appendage, dorsal view; 25D—phallic apparatus, lateral view. Adult. Color overall, dark brown; legs, palps, and antennae slightly paler, wings irregularly mottled with small light brown spots. Male forewing 6–6.9 mm .; female 7.1–7.5 mm . Male genitalia. Tergum VIII with posteromesal margin moderately emarginate, emargination V­shaped and extending no more than halfway to anterior margin. Sternum IX with anterolateral margin forming a rounded projection in dorsal half; posteroventral margin greatly produced, forming broadly rounded expansion; tergum IX reduced, forming a mesal projection over base of tergum X, mesal projection narrow, extending hood­like, with scabrous dorsal surface texture, but without spines. Tergum X with rounded lateral margins; apex sensillate, rounded as viewed dorsally, not or scarcely enlarged in lateral view; tergum basolaterally with minute spines. Intermediate appendage heavily sclerotized, comprised of short mesal projection with 2 or 3 elongate spines and basolateral cluster of elongate spines, decreasing in size ventrally. Preanal appendage narrow, constricted basally, moderately elongate, not greatly modified, with scant setae and numerous minute seta­like spines; apex abruptly narrowed, forming subacuminate projection, without apical seta. Inferior appendages robust; 1st article, in lateral view, about one and a half times longer than wide, tapering apically; 2nd article subequal in length to 1st article, relatively wide, enlarged apically; apex rounded, with prominent pad of short, stiff apicomesal setae. Phallobase relative short and evenly tubular, weakly curved at midlength; endotheca with about 5 or 6 large sclerotized spines. Holotype male: BRAZIL : Minas Gerais : Estação Ecológica do Tripuí , Córrego Tripuí , 20°23.364'S , 43°32.541'W , el 1070 m , 21.xi.1998 , Paprocki, Braga, Amarante, ( UMSP000046796 ) ( MZUSP ). Paratype s : BRAZIL : Minas Gerais : — 1 male , same locality data as holotype ( NMNH ) ; — 2 males , 2 females , Córrego da Serra de Ouro Fino , Vale do Tropeiro , 20°12.371'S , 43°38.581'W , el 1000 m , 8.x.2000 , Paprocki, Salgado, Isaac, ( MZUSP ) , ( UMSP ) . Etymology. This species is named tripuiensis after Estação Ecológica do Tripuí, the beautiful reserve where the holotype specimen was collected.