Polycentropus valdiviensis Flint 1983

Polycentropus valdiviensis

This species clearly belongs to the P. obtusus group of species, although it should be placed in its own subgroup. The elongate, ovoid clasper with its basomesal pocket, the spinulose ventral lobe of the cercus, and the presence of only a single pair of spines in the aedeagus are all unique within the group.

ADULT.—Length of forewing, 7–9 mm. Color pale brown, antennae and legs stramineous, head and thorax mesally with golden and laterally with brown hair; forewing brown with many golden flecks tending to be aligned in oblique bands.

Male Genitalia: Ninth sternum produced and obtusely angled anterolaterally. Tenth tergum membranous mesally, with erect lateral sclerites. Cercus with dorsolateral portion forming a large, flaplike lobe; ventral lobe low, rounded apically, with many small spines. A sclerotized ring mesad of cerci encircling aedeagus, divided ventrally and produced into a pair of long slender processes. Clasper elongate, oval in outline in lateral aspect, with dorsomesal face forming a shallow pocket into which the ventral lobe of the cercus fits. Aedeagus apically bearing a pair of slender spines, which are forcipate in dorsal aspect.

MATERIAL.—Holotype (male): CHILE, PCIA. VALDIVIA, S Valdivia, 23 Oct 1969, Flint and Barria, USNM Type 100489.

Paratypes: Same data as holotype, 9. PCIA. OSORNO, Río Rahue, 20 Oct 1969, Flint and Barria, 7, 1.