(Figure 20-29)

Description. Male holotype. Length 2.3 mm, width 1.7 mm. Body slightly elongate, convex. Dorsal surface with head weakly alutaceous, shiny, pronotum and elytron shiny. Color yellow except elytron with sutural margin narrowly dark brown, basal 1/3 unevenly yellowish brown, lateral brown spot in apical 1/2 extended inward 1/2 width of elytron, inner 1/3 of spot pale, nebulous (Fig. 20-23); venter of head, prosternum, meso- and metaventrites dark brown; abdomen brown except lateral 1/3 and ventrites 5-6 yellow. Head punctures small, separated by 1 to 4 times a diameter; pronotal punctures larger than on head, separated by a diameter or less; elytral punctures larger than on pronotum, separated by less than to 3 times a diameter; punctures on basal abdominal ventrites 1-3 coarse medially, separated by less than to twice a diameter, becoming fine, separated by less than to twice a diameter in lateral 1/3, punctures on ventrites 4-6 fine, dense, separated by a diameter or less. Clypeal apex broadly, deeply emarginate, clypeus and frons joined at abrupt angle. Epipleuron wide, weakly grooved medially, slightly descending externally, femoral depressions deep. Antenna with 11 articles (Fig. 29). Protibia narrow, slightly flanged. Prosternum with intercoxal carinae narrowly separated at apex, weakly convergent toward base, joined at middle of prosternum, connected to base by single stem. Postcoxal line on basal abdominal ventrite broadly arcuate, reaching posterior ventrite margin, rounded 1/3 distance to lateral margin (Fig. 24). Fifth ventrite broadly, shallowly emarginate apically; 6 th ventrite with shallow, broad, apical emargination. Genitalia with basal lobe shorter than paramere, apex wide, obliquely truncate, one margin sinuate, with large, median projection; paramere short, broad, strongly narrowed from base to apex, apex rounded; trabes short, about as long as phallobase (Fig. 27, 28); sipho long, slender, with apical membranous area, basal capsule with inner arm short, straight, narrow, outer arm long, wide, basal border weakly emarginate (Fig. 25, 26).

Female. Not known.

Type material. Holotype male: (Colombia), 4461, Columb., Hist.-Coll. (Coleoptera), Nr. 4461, Hyperapis spec., Columb., Zool. Mus. Berlin. (ZMHB).

Remarks. The dorsal color pattern of H. humboldti is unique, not resembling that of any previously described species. It will key to H. brethesi, couplet 47, in Gordon and Canepari (2008), which has a different dorsal pattern and male genitalia.

The holotype of H. humboldti is in the “historical collection” portion of the Humboldt Universität holdings.

Etymology. This species is named both in honor of Alexander von Humboldt, the noted German naturalist and explorer, and the Berlin University that bears his name.