Alterosa sanctipauli (Flint) Blahnik Table Of Contents, 2005

Blahnik Table Of Contents, Roger J., 2005, Alterosa, a new caddisfly genus from Brazil (Trichoptera: Philopotamidae), Zootaxa 991 (1), pp. 1-60 : 46-48

Alterosa sanctipauli (Flint) , new combination

Fig. 23A–D

Dolophilodes (Sortosa) sanctipauli Flint 1971: 20 .

Alterosa sanctipauli is similar to A. intervales , resembling that species in the elongate, narrow, unbranched intermediate appendages. It differs in that the setae of the intermediate appendage in A. sanctipauli are few, short, and terminal, rather than elongate and located along the apicolateral margin. Alterosa sanctipauli also differs from A. intervales in the shape of the apex of tergum X and absence of paired, spined longitudinal ridges found on the same structure.

Adult. Color in alcohol, brown. Male forewing 6 mm.

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 forming a rounded projection in dorsal half; posteroventral margin greatly produced, forming broadly rounded expansion; tergum IX greatly reduced, membranous or fused to base of tergum X. Tergum X with basolateral margins weakly protruding, apical half with margins subparallel, converging apically; rounded and distinctly enlarged in lateral view; tergum textured basolaterally, with scabrous cuticle and numerous small adpressed scale­like spines. Intermediate appendage heavily sclerotized, elongate, extending past preanal appendages, forming elongate rod­like projection, nearly as long as tergum X; apex rounded, terminating with 2 or 3 apical spine­like setae. Preanal appendage narrow, constricted basally, moderately elongate, not greatly modified, with scant setae and numerous minute seta­like spines; apex abruptly narrowed, forming subacuminate projection with distinct terminal seta. Inferior appendages elongate, linear, flattened on mesal surface; 1st article, in lateral view, narrow, more than 2x as long as wide, tapering apically; 2nd article subequal in length to 1st article, narrow, relatively uniform in width, only slightly narrower at apex than apex of 1st article; apex rounded, with small pad of short, stiff apicomesal setae. Phallobase tubular, relatively short and wide, scarcely curved; endotheca with numerous spines, most fine and relatively needle­like, in several apparent clusters.

Material examined: BRAZIL: São Paulo: —male Holotype, 3.xi.1961, E. J. Fittkau, ( NMNH).

Figures

FIGURE 23. Alterosa sanctipauli (Flint). Male genitalia: 23A—lateral view; 23B—dorsal view of segments IX and X; 23C—inferior appendage, dorsal view; 23D—phallic apparatus, lateral view.