20. Pentilia dianna Gordon and González, new species

Description. Male holotype. Length 2.4 mm, width 2.2 mm; dorsal surface shiny except head slightly alutaceous. Color dark brown; head yellow with clypeal apex narrowly brown; pronotum with lateral 1/3, anterior 1/3 yellow; abdomen becoming slightly paler toward lateral margin (Fig. 105); venter reddish yellow; abdomen yellow. Head punctures small, separated by less than a diameter; pronotal punctures as large as on head, separated by a less than to twice a diameter; elytral punctures smaller than on pronotum, barely visible, separated by 1 to 4 times a diameter; prosternum with small punctures separated by less than a diameter; mesosternum with punctures larger than on prosternum, separated by about a diameter; metasternum with punctures larger than on mesosternum, separated by less than to 3 times a diameter in median 1/3, absent in lateral 2/3; abdominal ventrites 1, 2 impunctate medially; ventrites 3–4 finely, densely punctured medially; ventrite 5 finely, densely punctured. Head with frons parallel sided, 1.5 times as wide as eye, clypeal apex widely emarginate, lateral angle abruptly curved (Fig. 106); eye canthus long, about 3/4 width of eye. Prosternum with lateral carina about 1/2 distance from apex to base of prosternum. Epipleuron strongly descending externally. Postcoxal line on basal abdominal ventrite curved, extended 3/4 distance to rear margin of ventrite. Genitalia with penis guide long, basal lobe as long as paramere, gradually narrowed at apical 1/3 to rounded apex, apex slightly emarginate; paramere slender, nearly straight, apex rounded (Fig. 107, 108); penis short, robust, apex lost and base lost, median portion (Fig. 109).

Female. Similar to male except head brown, lateral 1/4 of pronotum yellow; penis capsule not examined.

Variation. Length 2.1 to 2.4 mm, width 1.9 to 2.2 mm, elytral color varies from paler to darker brown.

Type material. Holotype male; British Guiana, Feb. 1954, Collector F. J. Simmonds. (USNM). Paratypes 72, 7, same data as for holotype; 3, British Guiana, Feb. 1954, Collector F. J. Simmonds; 59, Georgetown, Br. Guiana, 9-24,’37, KA Bartlett, P.R. 1956; 1. Bot. Gard. Georgetown, Brit. Guiana, Sept.26, 1918 A706, Harold Morrison; 1, On Coconut, Nickerie, Surinam, April 1951, Collector F. J. Simmonds (USNM).

Remarks. The all brown dorsum of Pentilia dianna distinguish it from those species with black elytra. The male genitalia and Guyana type locality will further confirm an identification.