Alterosa, a new caddisfly genus from Brazil (Trichoptera: Philopotamidae) Blahnik Table Of Contents, Roger J. Zootaxa 2005 2005-05-23 991 1 1 60 Blahnik Table Of Contents, 2005 Blahnik Table Of Contents 2005 [264,474,1502,1528] Insecta Philopotamidae Alterosa GBIF Animalia Trichoptera 50 51 Arthropoda species truncata sp. nov.   Fig. 26A–E This species is similar only to  A. schadrackorumin having the apices of the inferior appendages broadened and truncate, but in  A. truncatathey are much more distinctly so. The relative lengths of the articles of the inferior appendages, as well as the overall structure of the genitalia of these two species are otherwise entirely dissimilar. An additional diagnostically unique character for  A. truncatais the structure of the intermediate appendages, which are elongate, narrow, and arched, each terminating in a very prominent apical lance­like seta. There is some minor variation among populations in the structure of tergum X, as shown in Fig. 26A and 26E. Adult. Color overall, dark brown; legs, palps, and antennae slightly paler, wings irregularly mottled with small light brown spots. Male forewing 5.5–7 mm.; female 6.1–7 mm.   FIGURE 26.  Alterosa truncata, new species. Male genitalia: 26A—lateral view; 26B—dorsal view of segments IX and X; 26C—inferior appendage, dorsal view; 26D—phallic apparatus, lateral view; 26E—tergum X and intermediate appendage (variant), lateral view. Male genitalia. Tergum VIII with posteromesal margin deeply emarginate, emargination V­shaped and extending more than half way to anterior margin. Sternum IX with anterolateral margin broadly rounded; posteroventral margin greatly produced, forming broadly rounded expansion; tergum IX greatly reduced, membranous or fused to base of tergum X. Tergum X narrow, lateral margins subparallel; dorsally with mesally divided crest­like projection near base, with spine­like projections along each side of divided margin, apex of crest either undulate or serrate; apex sensillate, rounded as viewed dorsally, rounded and slightly enlarged in lateral view, or with angular preapical projection. Intermediate appendage heavily sclerotized, elongate, extending past preanal appendages, narrow rod­like, but with strong basal curvature, narrowly paralleling lateral margins of tergum X; apex acute, terminating in apical spine­like seta, seta prominent, lance­like. Preanal appendage narrow, constricted basally, moderately elongate, not greatly modified, with scant setae and numerous minute seta­like spines; apex rounded, without apical seta, but frequently with 1 or 2 short, blunt, preapical projections from the ventral surface, fringed apically with minute spines. Inferior appendages elongate, linear, flattened on mesal surface; 1st article, in lateral view, about 2x as long as wide, tapering apically; 2nd article subequal in length to 1st article, moderately wide, nearly as wide at base as apex of 1st article; apex enlarged and subtruncate, with fringing pad of short, stiff apicomesal setae. Phallobase tubular, narrow, moderately elongate, with moderate basal inflection and slight curvature; endotheca with 2 obvious tracts of fine spines, one of longer needle­like spines and the other (ventral) of paired patches of shorter spines.     Holotypemale: BRAZIL: Minas Gerais: Estação Ecológica de Peti, Córrego Brucutu, 19°52.995'S, 43°22.452W,  17.xi.1998, Paprocki, Amarante, ( UMSP000046574) ( MZUSP).    Paratypes: BRAZIL: Minas Gerais:— 1 male, same locality data as holotype, ( UMSP); —  2 males, Rio Mainarte, bridge on Cibrãoroad, 20°27'258'S, 43°24.094'W, el  700 m,  19.ix.1998, Paprocki, Amarante, ( MZUSP); —  2 males, 2 females, Parque Nacional do Caparaó, Rio Caparaóat Vale Verde, 20°25.029'S, 41°50.767'W, el  1350 m,  12– 13.iii.2002, Holzenthal, Blahnik, Paprocki, Prather, ( UMSP);   São Paulo:— 1 male, 3 females, Cachoeira do Paredão, Lajeado, Serra do Bocaina, 22°43.533'S, 44°37.274'W, el  1550 m, Holzenthal, Blahnik, Paprocki, Prather, ( MZUSP); —  3 males, Cachoeira do Principe, Lajeado, Serra do Bocaina, 22°49.913'S, 44°37.418'S, el  1560 m,  4.iii.2002, Holzenthal, Blahnik, Paprocki, Prather, ( UMSP); —  1 male, Parque Nacional da Serra da Bocaina, small tributary on main park road, 22°46.585'S, 44°36.307'W, el  1560 m,  2– 3.iii.2002, Holzenthal, Blahnik, Paprocki, Prather, ( UMSP); —  1 male, Estacion Biológica Boraceia, Ribeirão Venerando,  26.i.1974, Froehlich, ( NMNH); —  1 male, Casa Grande, Pedeira,  15.xi.1974, C. G. Froehlich, ( NMNH). Etymology. This species is named  truncatafor its diagnostic, apically flattened and truncate inferior appendages. 1998-11-17 MZUSP Brazil Estacao Ecologica de Peti -19.88325 Paprocki 1 -43.3742 Corrego Brucutu 52 53 UMSP000046574 1 Minas Gerais holotype UMSP Brazil 52 53 1 1 Minas Gerais paratype 1998-09-19 MZUSP Paprocki & Amarante Brazil 700 Cibrao -43.401566 Rio Mainarte 52 53 2 2 Minas Gerais paratype 2002-03-12 2002-03-13 2002-03-12 UMSP Holzenthal & Blahnik & Paprocki & Prather Brazil Parque Nacional do Caparao 1350 -20.41715 Vale Verde 1 -41.846115 Rio Caparao 52 53 4 2 2 Minas Gerais paratype MZUSP Holzenthal & Blahnik & Paprocki & Prather Brazil Cachoeira do Paredao 1550 -22.72555 Serra do Bocaina 1 -44.621235 Lajeado 52 53 4 3 1 Sao Paulo paratype 2002-03-04 UMSP Holzenthal & Blahnik & Paprocki & Prather Brazil Cachoeira do Principe 1560 -44.623634 Serra do Bocaina Lajeado 52 53 3 3 Sao Paulo paratype 2002-03-02 2002-03-03 2002-03-02 UMSP Holzenthal & Blahnik & Paprocki & Prather Brazil 1560 -22.776417 Parque Nacional da Serra da Bocaina 1 -44.605118 52 53 1 1 Sao Paulo paratype 1974-01-26 NMNH Froehlich Brazil Ribeirao Venerando Estacion Biologica Boraceia 52 53 1 1 Sao Paulo paratype 1974-11-15 NMNH C. G. Froehlich Brazil Pedeira Casa Grande 52 53 1 1 Sao Paulo paratype