Evansolidia gracilitas Nielson 2011, sp. nov.

(Plate 4E, Figs. 234–241)

Length. 7.40 mm; female unknown.

External morphology. Moderately large, robust species. General color black and yellow; forewings with yellow veins on mid-clavus, lateral cells yellowish transparent, forming incomplete transverse band, incomplete transverse, yellow transparent band subapically; mesonotum lateral margins yellow, base yellow; pronotum with broken, anterior yellow band, pale yellow markings under anterior margin; crown with yellow lateral margins, yellow longitudinal stripe medially; eyes black; face yellow with broad black longitudinal bands laterally, separated by medial, yellow stripe, extending basally to apex of clypellus (Plate 4E). Head narrower than pronotum, anterior margin obtusely angulate; crown slightly narrower than width of eyes, produced distally about 1/3 entire length, lateral margins convergent basally, slightly carinate; eyes large, semiglobular; pronotum about ¼ shorter than crown, surface sparsely bullated; mesonotum large, nearly twice as long as pronotum; forewings typical; clypeus long, narrow, lateral margins broadly convex; clypellus short, about 1/3 as long as clypeus, narrow, inflated basally, lateral margins constricted medially.

Male genitalia. Pygofer in lateral view small, triangulate, small digitate lobe on caudodorsal margin (Fig. 234); right subgenital plate long, narrow, glabrous (Fig. 235); style shorter than aedeagus, robust, with small, subapical digitate process in lateral view (Figs. 236, 237); aedeagus long, tubular with 4 long setae near middle of shaft, 3 smaller setae below middle (Figs. 238, 239); connective broadly Y-shaped, stem very short, disk between arms membranous, longitudinal ridge medially (Fig. 240); dorsal connective long, narrow, base slightly expanded (Fig. 241), attached to base of aedeagal socle (Fig. 238).

Material examined. Holotype male. COLOMBIA: Amazonas, PNN Amacayacu San Martin, 3º 23’ S.– 70º 6’ W., 150 m., Malaise. 9/16/00–9/24/00, B. Amador, leg., M. 840 (IAHC).

Etymology. The name is descriptive for relative slender subgenital plates and styles.

Remarks. From E. bispinosa, sp. nov. to which it is most similar, E. gracilatis, sp. nov. can be separated by the greater number of spines and their arrangement on the shaft of the aedeagus.