Sandersellus digitatus sp. nov.

(Figs. 15–21)

Length: male 7.00 mm.

External morphology. Small, slender species. General color piceous with numerous, irregular, translucent flavous spots on dorsum; face piceous except for flavous clypeus and clypellus (Fig. 22). Head small, narrow, about 2/3 as wide as pronotum; eyes large, semibulbous; crown very narrow, about ½ as wide as eyes, produced distally about 1/3 of its entire median length, lateral margins strongly carinate; pronotum large, about ½ as long as median length of crown, with incomplete median longitudinal carina; mesonotum large, about as long a pronotum, with faint median longitudinal carina, lateral angles carinate; clypeus very long, narrow, lateral margins broadly convex, tapered distally; clypellus short, about 1/3 as long as clypeus, lateral margin concave, slightly inflated basally.

Male genitalia. Pygofer in lateral view with long, digitate caudodorsal lobe, caudoventral process long, flanged distally and extended beyond caudodorsal lobe (Fig. 16); subgenital plate in ventral view elongate, broad medially, glabrous (Fig. 17); style slender, long, more than 1/4 times longer than aedeagus, expanded along middle in lateral view (Figs. 18, 19); aedeagus tubular, narrow in distal 2/3 with short, digitate, membranous lobe distally, lobe projected basally, gonopore cryptic (Figs. 20, 21).

Female unknown.

Material examined. H olotype male. BRAZIL. Rondonia, 62 km. SE. Ariquenes, 5–16 Nov 1996, W. J. Hanson, (NMNH) .

Etymology. This species is named for the short, membranous lobe on the apex of the aedeagus.

Remarks. The digitate lobe on the apex of the aedeagus (Figs. 20, 21)will distinguish this species. Disjunct distribution (Brazil) also separates S. digitatus geographically from known species in Northwest South America and Central America.