Arthropeina colombiana, sp. nov.

(Figs. 3, 21–26, 61, 68–69, 79, 85)

Diagnosis (female). Length of eighth flagellomere two times length of seventh (Fig. 3). Prescutum anteriorly and laterally dark brown, postscutum basally dark brown (Fig. 61). Projection of posterior margin of genital fork rounded basally (Figs. 21, 23). Tergite 10 projected between the cerci in females (Fig. 26).

Material examined. HOLOTYPE, ♀ (right antenna and right wing slide–mounted), COLOMBIA, Valle del Cauca, PNN Farallone de Cali, Cgto. La Meseta, 03º34’N 76º40’W 1960 m, Malaise 10–25.ix.2003, S. Sarria & M. Losso Leg. M. 4547 (IAvH).

Description. Female. Length: body, 8.1 mm; wing, 9.0 mm. Head. Vertex pale, setation yellow. Upper frons slightly reddish yellow. Flagellomeres l–3 brownish on outer margin, pale on inner margin; flagellomeres 4–8 dark brown to black. Eighth flagellomere twice the length of seventh (Fig. 3). Palpus (Fig. 69) whitish yellow, elongate; basal segment three times its width; apical segment oval, 2.75 times as long as wide, 1.5 times length of basal segment, both with pale hairs. Thorax (Fig. 61). Mostly yellow. Postpronotal lobes whitish yellow, dark brown anteriorly, notopleural strip dark brown, both contrasting with scutum color. Prescutum anteriorly and laterally dark brown, postscutum basally and its connection with the scutellum dark brown; scutellum mostly whitish yellow, except dark brown on outer margin; brownish pilosity. Legs. Mostly reddish yellow, except for tarsomeres slightly brownish, all trochanters brown to dark brown, hind coxae dorsally, and mid and hind tibiae on basal two-thirds dark brown. Wing as in Fig. 68. Halter pale, knob whitish yellow. Abdomen. Reddish yellow, with black transverse bands on tergites; sternites weakly sclerotized, 1–4 with small brown maculae; first tergite entirely black. Female genitalia (Figs. 21–26). Tergite 8 wide, more or less rectangular, rounded anteriorly. Sternite 8 quadrate (Fig. 25), narrowing towards distal half; gonapophyses sclerotized, lobes divergent, rounded apically. Tergite 9 with distal half wider than basal half (Fig. 22). Genital fork with anterior arm rounded (Figs. 21–23), as wide as posterior arm; membranous lobes of fork wide; projection of posterior margin rounded basally; margin between posterior projection with a moderately circular incision medially; genital opening small, circular, a few microtrichia on bursa. Three spermathecae present (Fig. 24), lateral ones with long ducts; spermathecal capsules more or less ovoid, strongly sclerotized, not clearly helicoid. Tergite 10 projected between the cerci (Fig. 26). Cercus of first segment moderately compressed, basally wider than distally; segment 1 of cercus two times length of segment 2.

Male. Unknown.

Etymology. The name is feminine and the specific epithet is a reference to the type –locality.

Geographic distribution. Known only from the type-locality in Valle del Cauca, Colombia (Fig. 92).