this species from all others in Mexico. In males, the basal plate (Fig. 6-19) and median

lobe (Figs. 6-17 and 6-18) are easily distinguished from all other species.

 Description. Male. Form: Elongate oval; contractile; strongly convex dorsally.

Length: 1.1 mm (measured from apex of clypeus to apex of elytra); breadth: 0.9 mm

(measured across elytral humeri). Color: Head, thorax, elytra, and underside dark

brown, posterior margin of elytra translucent; legs and antennae brown or black. Head:

Broad and convex, clypeus moderately produced, narrow, and slightly reflexed. Eyes

large, oblong, with internal margins distinct. Genae not visible from above. Dorsal

surface smooth under 100 times magnification, distinctly alutaceous and finely punctate.

Antennae 11-segmented including a club with 3 antennomeres, club length about 12-23

size of the eye. Club flat and distinctly separated from funicle and with a distinctly

serrated margin. First club antennomere wider than long, second club antennomere about

as long as wide. Terminal club antennomere truncate (Fig. 6-16), setose and longer than

wide. Antennomere 3 as long or slightly longer than antennomeres 4 and 5 combined.

Pronotum: Strongly convex, lateral margins curved; anterior angle more narrowly

arcuate than posterior. Surface distinctly alutaceous with fine punctation. Scutellum:

Alutaceous and triangular with straight to slightly convex margins. Elytra: Uniform

width narrowing at apical 1/5. Strongly convex, sides slightly sinuous and apices

rounded. Length slightly shorter than combined width (32:37). Uniformly punctate

along dorsal surface, smooth at sides and base with a large impunctate area at apices of

elytra. Appearing alutaceous under 100 times magnification. Median margin and apices

of elytra bordered. Underside: Metasternum alutaceous, roughly punctured, and clothed

in long coarse hairs. Abdominal sternites alutaceous and punctate with long, coarse hairs