Polycentropus cipoensis Hamilton & Holzenthal

Hamilton, Steven W. & Holzenthal, Ralph W., 2011, Twenty-four new species of Polycentropus (Trichoptera, Polycentropodidae) from Brazil, ZooKeys 76, pp. 1-53 : 32-34

Polycentropus cipoensis Hamilton & Holzenthal sp. n. Fig. 17

Polycentropus new species 6 Hamilton 1986: 91-93, 203; Fig. 6.9.

Description.

Polycentropus cipoensis sp. n. is clearly a member of the jorgenseni species complex, but is otherwise easily separated from the other Neotropical Polycentropus by the inferior appendage which has a triangular base, but extends into a long, narrowed apex and a mesobasal process that is somewhat palmate in its posterior aspect. In addition, the intermediate appendage is short as are the 2 processes of the preanal appendage. The endothecal sclerotic band ends in a pair of prominent hooks, similar to, but larger, than those in Polycentropus fluminensis , Polycentropus tripui , Polycentropus carolae , and Polycentropus acinaciformis sp. n. The apicoventral process of the phallobase, while similar to that seen in other members of the jorgenseni species complex, is notably shorter and wider and the apical emargination is broadly u-shape.

Adult. Length of forewing (male) 5.8-7.0 mm. Body brown to dark brown; dorsum of head and thorax dark brown, clothed with long, erect dark setae; base of forewing with long, erect dark setae, general vestiture of forewing with fine brown setae, lacking patches of pale setae (in alcohol); legs brown.

Male. Genitalia as in Fig. 17. Sternum IX in lateral view subtriangular, slightly greater than 1/2 height of segment VIII; in ventral view trapezoidal, anterior corners sharply rounded, sides slightly constricted anteriorly, anterior margin shallowly concave, posterior margin slightly concave with broad, shallow convex medial region. Ter ga IX + X membranous. Intermediate appendage slightly curved ventrad, short, length about one-half length of inferior appendage, basal region simple, not expanded; in dorsal view narrowly spindle-like. Mesolateral process of preanal appendage very short, apex truncate, at base broadly joined to dorsal 1/2 of mesoventral process; mesoventral process directed caudad, broadly truncate, slightly shorter than length of mesolateral process. Inferior appendage in lateral view long, slender; dorsolateral flange low, protruding as rounded triangle, without caudomesal spine; mesoventral spine present, narrow, in lateral view acute, positioned well basad; in ventral view inferior appendage narrowly triangular; mesoventral spine hidden. Phallobase very short; in lateral view apicoventral projection very broad, much shorter than diameter of apical diameter of phallobase apex, with 2 points; endothecal sclerotic band broad, ending in 2-prong hook; endothecal spines absent; phallotremal sclerite wide in dorsal aspect. Subphallic sclerite Y-shaped, arms long, pedicel short, broad; narrow in lateral view, ventrally somewhat broadened.

Holotype male

: BRAZIL: Minas Gerais: Serra do Cipó, caminho da usina, 7.vii.1974, Froehlich, Shimizu, Carvalho (UMSP000131243) (in alcohol) (MZUSP).

Paratypes:

BRAZIL: Minas Gerais: same data as holotype, except, km 110, 24.iv.1975, Froehlich, Carvalho, Shimizu, 1 male (in alcohol) (NMNH); Serra do Cipó, caminho da usina, Rio Capivara, 22.ix.1976, CGF, MAJC, GYS, 1 male, 1 female (in alcohol) (NMNH); same, except 18.xii.1973, Froehlich, 2 males (in alcohol) (NMNH); same, except 18.xii.1974, Froehlich, 1 male (in alcohol) (NMNH); same, except 18.iv.1975, Froehlich, 2 males, 4 females, (in alcohol) (NMNH); same, except afluente Rio Capivara, 19.iv.1975, Froehlich, Carvalho, Shimizu, 6 males, 2 females (in alcohol) (NMNH); Serra do Cipó, Cardeal Mota, Cachoeira Veu da Noiva, 19°18.912'S, 43°36.260'W, 800 m, 12.xi.2001, Holzenthal, Amarante, Blahnik, Paprocki, 8 males (UMSP), 1 male (in alcohol) (UMSP); Serra do Cipó, trib. to Rio Capivara, 19°14.396'S, 43°34.939'W, 1000 m, 18.ii.1998, Holzenthal & Paprocki, 1 male (MZUSP); Serra do Cipó, Mãe d’Agua, Chapeu do Sol, 19°18.807'S, 43°35.665'W, 1000 m, 17.ii.1998, Holzenthal & Paprocki, 1 male, 1 female (UFBA), 1 male, 1 female (UFRJ); km 110, Chapeu do Sol, á luz, 21.xii.1974, 1 male (NMNH); São Paulo: 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, 1 male (MZUSP).

Etymology.

Named for Serra do Cipó, the mountain range where the species was collected.