Polycentropus carolae Hamilton & Holzenthal

Hamilton, Steven W. & Holzenthal, Ralph W., 2011, Twenty-four new species of Polycentropus (Trichoptera, Polycentropodidae) from Brazil, ZooKeys 76, pp. 1-53 : 23-24

Polycentropus carolae Hamilton & Holzenthal sp. n. Fig. 12

Polycentropus new species 3 Hamilton 1986: 87-88, 200; Fig. 6.6.

Description.

Polycentropus carolae sp. n. is most similar in many features to Polycentropus minero and Polycentropus caaete sp. n. In Polycentropus carolae sp. n., the mesoventral process of the preanal appendage slightly exceeds the mesolateral process, whereas in Polycentropus minero it is shorter and in Polycentropus caaete sp. n. it is much longer. Also, Polycentropus carolae sp. n.has a shallow excavation in the posterior margin of the inferior appendage while it is absent in Polycentropus minero and deeper in Polycentropus caaete sp. n. Finally, the triangular shape of the mesolateral process of the preanal appendage and the small claw-like structure at the apex of the endothecal sclerotic band are unique to this species in the 10-species aguyje cluster.

Adult. Length of forewing (male) 5.4-6.7 mm. Body dark brown to black; general vestiture of forewing with fine black setae, lacking patches of pale setae; legs brown.

Male. Genitalia as in Fig. 12. Sternum IX in lateral view subtriangular, about 3/4 height of segment VIII; in ventral view slightly trapezoidal, anterior corners broadly rounded, sides slightly constricted anteriorly, anterior margin moderately concave, posterior margin slightly concave with very broad, shallow convex medial region. Terga IX + X membranous. Intermediate appendage gently curving ventromesad, long, length slightly greater than height of sternum IX, basal region slightly expanded; in dorsal view nearly uniform in diameter throughout length, gradually narrowing apically. Mesolateral process of preanal appendage short, apex slightly triangular, at base broadly joined to mesoventral process; mesoventral process directed caudad, digitate, slightly exceeding length of mesolateral process. Inferior appendage in lateral view short, trapezoidal; posteroventral margin acute below shallow caudal emargination; dorsolateral flange relatively high, straight dorsally, partially exposed in lateral view; mesoventral spine present, broad, in lateral view acute, positioned more caudad; in ventral view inferior appendage approximately round, caudomesal spine hidden; mesoventral spine with apex visible. Phallobase moderately short; in lateral view apicoventral projection narrow, approximately equal to apical diameter of phallobase apex, with 1 point; endothecal sclerotic band narrow, apex terminating in simple claw; endothecal spines absent; phallotremal sclerite wide in dorsal aspect. Subphallic sclerite Y-shaped, arms long, pedicel with broad lateral expansions; narrow in lateral view, ventrally somewhat narrowed.

Holotype male:

BRAZIL: Rio de Janeiro: km 54, 26 km E Nova Friburgo, 410 m, 19.iv.1977, C.M. & O.S. Flint, Jr. (UMSP000136621) (NMNH).

Paratypes:

same data as holotype, 3 males, 1 female; same, except 25.iv.1977, 1 female; Rio de Janeiro: Cachoeiras de Macacu, 800 m, 15.x.1985, Miller, 1 male (NMNH); Parque Nacional da Serra dos Órgãos, Guapimirim, Trilha das Ruínas, 22 °29.679'S, 42°59.729'W, 940 m, 28.ii.2002, Blahnik & Paprocki, 2 males (in alcohol) (UMSP).

Etymology.

Named with affection for Mrs. Carol Flint in honor of her numerous and important collections of Trichoptera made over many years across Latin America.