Atopsyche (Atopsyche) urumarca

Santos, Allan P. M. & Holzenthal, Ralph W., 2012, Three new species of Atopsyche Banks (Trichoptera, Hydrobiosidae) from Brazil, ZooKeys 207, pp. 65-78 : 73-74

Atopsyche (Atopsyche) urumarca Schmid Figs 10

Atopsyche (Atopsaura) urumarca Schmid, 1989: 131 [type locality: Brazil, Serra do Cipó, Rio Capivara; MZSP; male].

Diagnosis.

Atopsyche urumarca Schmid was described from Minas Gerais state, Brazil, and placed in the Atopsyche bolivari Banks group. According to Schimid (1989), Atopsyche urumarca is most similar to Atopsyche pachacutec Schmid, especially in the form of the parapod and the apex of the phallotheca, but they differ in the structure of the second article of the inferior appendage. We have examined material from southeastern Brazil, including the type locality, and we found an interesting populational variation in the male genitalia structure. This variation is noticeable in the shape of the parapod and the apex of phallotheca. In all specimens, the parapod, in lateral view, is broad basally, with an oblique, mesal U-shaped incision, but this incision is deepest in specimens collected in Ipoema, Minas Gerais state, and shallow in specimens from São Paulo state; the parapod also can end in a narrow and rounded apex or bear a small, dorsal spine. The phallotheca is broadly rounded basally, with 3 paired processes posteriorly, the dorsal one long and broad, with small dorsal and ventral projections at its apex. Some specimens have a small, additional spine-like process on the posterior margin of this dorsal process, and the ventral margin can be rounded, slightly pointed, or pointed and hooked apically.

Material examined.

BRAZIL: Minas Gerais: Serra do Cipó, Rio Capivara, 19°20.553'S, 43°38.531'W, 950 m, 11.ii.1998, Holzenthal & Paprocki, 2 males (pinned) (UMSP); Serra do Cipó, trib. to Rio Capivara, 19°14.396'S, 43°34.939'W, 1000 m, 18.ii.1998, Holzenthal & Paprocki, 3 males (pinned) (MZSP); Rio Tanque, ca. 12 km (rd) from Ipoema, 19°32.208'S, 43°26.878'W, 750 m, 16.v.1998, Holzenthal & Paprocki, 2 males, 1 female (pinned) (DZRJ); Rio Santo Antônio, downstream from Morro do Pilar, 19°08.134'S, 43°21.256'W, 530 m, 17.x.2000, Paprocki & Ferreira, 1 male (pinned) (UMSP); P.E. de São Gonçalo do Rio Preto, Rio Preto, 18°07.841'S, 43°20.246'W, 791 m, 12.x.2000, Paprocki, Amarante, Sal gado, 1 male (alcohol) (UMSP); São Paulo: Altinópolis, Cachoeira dos Macacos, 20°55.390'S, 47°22.758'W, 758 m, 18.xi.2003, Holzenthal, Paprocki & Calor, 27 males, 15 females (pinned) (UMSP), 9 males, 1 female (alcohol) (DZRJ); Altinópolis, Fazenda São João da Mata, Rio Baguassu, 21°00.588'S, 47°28.900'W, 745 m, 19-21.xi.2003, Holzenthal, Paprocki & Calor, 8 male, 17 females (pinned) (3 males, 5 females, NMNH; 5 males, 12 females, UMSP), 28 males (alcohol) (UMSP); Pedregulho, Sítio Bruninho, 20°09.240'S, 47°30.704'W, 630 m, 17.xi.2003, Holzenthal, Paprocki & Calor, 1 male, 1 female (pinned) (UMSP); Pedregulho, Ribeirão São Pedro, 20°09.113'S, 47°30.626'W, 617 m, 16.ix.2003, Holzenthal, Paprocki, Calor, 1 male (alcohol) (UMSP).