Polycentropus minero Hamilton & Holzenthal

Hamilton, Steven W. & Holzenthal, Ralph W., 2011, Twenty-four new species of Polycentropus (Trichoptera, Polycentropodidae) from Brazil, ZooKeys 76, pp. 1-53 : 21-23

Polycentropus minero Hamilton & Holzenthal sp. n. Fig. 11

Polycentropus new species 5 Hamilton 1986: 90-91, 202; Fig. 6.8.

Description.

Similar to Polycentropus cheliceratus , the more angular shape of the inferior appendage in lateral and ventral aspects as well as the lateral view of the preanal appendage with its larger mesolateral process and shorter, thick mesoventral process distinguishes Polycentropus minero sp. n. from it and other similar species of the aguyje cluster.

Adult. Length of forewing (male) 6.4-8.2 mm. Body dark brown; dorsum of head and thorax black; general vestiture of forewing with fine brown setae (in alcohol); legs brown.

Male. Genitalia as in Fig. 11. Sternum IX in lateral view subtriangular, about 3/4 height of segment VIII; in ventral view quadrate, anterior corners broadly rounded, sides slightly constricted anteriorly, anterior margin shallowly concave, posterior margin shallowly concave. Terga IX + X membranous. Intermediate appendage gently curving ventromesad, moderate elongate, length about two-thirds 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 rounded, with slight ventral extension, at base broadly joined to mesoventral process; mesoventral process directed ventrad to rounded point, broadly digitate, about 2/3 length of mesolateral process. Inferior appendage in lateral view short, quadrate; dorsolateral flange low, straight dorsally, with prominent caudomesal spine, slightly exposed in lateral view; mesoventral spine present, narrow, in lateral view acute, positioned well basad; in ventral view inferior appendage quadrate, caudomesal spine prominent, acute; mesoventral spine hidden. Phallobase moderately short; in lateral view apicoventral projection narrow, slightly shorter than diameter of apical diameter of phallobase apex, with 1 point; endothecal sclerotic band narrow, becoming less scle rotized apically; endothecal spines absent; phallotremal sclerite narrow in dorsal aspect. Subphallic sclerite Y-shaped, arms long, pedicel with broad lateral expansions; narrow in lateral view, ventrally narrowed.

Holotype male:

BRAZIL: Minas Gerais: Serra do Cipo, Rio Capivara, 6.vii.1974, Froehlich, Shimizu, et al. (NMNH).

Paratypes:

BRAZIL: same data as holotype, 1 female (NMNH); same, except 18.xii.1973, Froehlich, 4 males (NMNH); same except 9.ii.1974, Exp. Dep. Zool., 1 male, 2 females (NMNH).

Etymology.

The name minero is the Portuguese demonym for the inhabitants of Minas Gerais, the Brazilian state where the type specimens were collected.