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