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 [264,469,1438,1464] Insecta Philopotamidae Alterosa GBIF Animalia Trichoptera 34 35 Arthropoda species itatiaiae sp. nov.   Fig. 17A–E This species is probably most similar to  A. intervales, but differs from that species, and others having a tergum X with a scabrous basal protrusion, in the highly modified and unique structure of the preanal and intermediate appendages. The preanal appendages of  A. itatiaiaeare thick and stout and bear an apical brush of setae, and the intermediate appendages have a linear array of coarse setae on a longitudinal apicolateral fold. The scabrous basal protrusions of tergum X are also more strongly developed than in any other species of  Alterosa. Adult. Color overall, dark brown; legs, palps, and antennae slightly paler, wings irregularly mottled with small light brown spots. Male forewing 7–8.3 mm.; female 8 mm.   FIGURE 17.  Alterosa itatiaiae, new species. Male genitalia: 17A—lateral view; 17B—dorsal view of segments IX and X; 17C—inferior appendage, dorsal view; 17D—phallic apparatus, lateral view; 17E—apex of endotheca, ventral view. 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 weakly rounded, subtruncate; posteroventral margin greatly produced, extending nearly linearly from dorsum; tergum IX greatly reduced, membranous or fused to base of tergum X. Tergum X with rounded lateral margins, forming elevate lateral projections; dorsally with mesally paired longitudinal ridges, each apically lined with short spines, appearing as apparent mesal invagination; apex sensillate, subtruncate as viewed dorsally, rounded and slightly enlarged in lateral view; tergum textured basolaterally, with scabrous cuticle and numerous small adpressed scale­like spines. Intermediate appendage heavily sclerotized, elongate, subequal in length to preanal appendage, narrow at base and gradually expanding apically, with row of thickened setae in lateral cleft on apical half; apex rounded. Preanal appendage narrow, only weakly constricted basally, elongate, with scant setae and numerous minute seta­like spines; apex rounded, with brush of numerous thickened setae. Inferior appendages elongate, linear, flattened on mesal surface; 1st article, in lateral view, about 2x as long as wide, tapering apically; 2nd article shorter than 1st, nearly uniform in width, narrower at base than apex of 2nd article; apex rounded, with small pad of short, stiff apicomesal setae. Phallobase tubular, relatively short and wide, slightly curved; endotheca with about 4 pairs of short tack­like spines basoventrally (as seen with endotheca extended), preapically with paired tracts of fine spines, extending more or less linearly from venter onto apicolateral pleats, dorsally with sack­like projection at about midlength.     Holotypemale: BRAZIL: Rio de Janeiro:Parque Nacional Itatiaia, Rio Campo Belo, trail to Veu da Noiva, 22°25.706'S, 44°37.171'W, el  1310 m,  24.xi.2001, Holzenthal, Paprocki, Blahnik, Neto, ( UMSP000080369) ( MZUSP)    Paratypes: BRAZIL: Rio de Janeiro:— 11 males, 1 female, same locality data as holotype( MZUSP) ( UMSP); —  1 male, same locality,  5.iii.2002, Holzenthal, Blahnik, Paprocki, Prather, ( NMNH); —  5 males, 1 female, same locality,  5.iii.2002, Holzenthal, Blahnik, Paprocki, Prather, ( UMSP); —  2 males, Parque Nacional Itatiaia, Rio Campo Belo, 22°27.033'S, 44°36.818'W, el  1300 m,  23.xi.2001, Holzenthal, Paprocki, Blahnik, Neto, ( NMNH); —  2 males, Rio de Janeiro, Parque Nacional Itatiaia, trib. to Rio Taquaral, 22°26.688'S, 44°36.464'W, el  1320 m,  6.iii.2002, Holzenthal, Blahnik, Prather, ( MZUSP).  Etymology. Thisspecies is named  itatiaiaefor Parque Nacional do Itatiaia, the very beautiful Atlantictropical rainforest site where the type specimens were collected. 2001-11-24 MZUSP da Noiva Brazil 1310 -22.428432 Veu da Noiva 1 -44.61952 Rio Campo Belo 36 37 UMSP000080369 1 Rio de Janeiro holotype MZUSP, UMSP Brazil 36 37 12 1 11 Rio de Janeiro paratype 2002-03-05 NMNH Holzenthal & Blahnik & Paprocki & Prather Brazil 36 37 1 1 Rio de Janeiro paratype 2002-03-05 UMSP Holzenthal & Blahnik & Paprocki & Prather Brazil 36 37 6 1 5 Rio de Janeiro paratype 2001-11-23 NMNH Holzenthal & Paprocki & Blahnik & Neto Brazil 1300 -22.45055 Rio Campo Belo 1 -44.613632 Parque Nacional Itatiaia 36 37 2 2 Rio de Janeiro paratype 2002-03-06 MZUSP Holzenthal & Blahnik & Prather Brazil 1320 -22.4448 Rio Taquaral 1 -44.607735 Parque Nacional Itatiaia 36 37 2 2 Rio de Janeiro paratype Atlantic Brazil Parque Nacional do Itatiaia Etymology. This 36 37 1 Rio de Janeiro paratype