Espeson nevermanni BERNHAUER, 1942: 4 (Figs 10a,b, 16F)

Type material examined:

Holotype, female: Costa Rica: Hamburgfarm, Ebene Limon, unter loser Rinde, female, 4.10.1928, leg. P. Nevermann (FMNH).

Diagnosis:

Unfortunately only the female holotype is known. The species resembles E. microphthalmus, E. adisi, and E. simplex in the absence of pronotal impressions. Compared to E. simplex, E. nevermanni is smaller in size and as long as E. adisi and E. microphthalmus . It can be differentiated from E. microphthalmus by the wider elytra and from E. adisi by the more rectangular temples.

Description:

Length: 1.8 mm. Colour: yellow. Head: 0.20 mm long, 0.33 mm wide; with eyes not prominent and temples nearly as long as eyes; fore-head nearly parallel in front of eyes; clypeus triangular; labrum with short spine in middle; punctation dense and deep; distance between punctures irregular; on average slightly smaller than diameter of punctures; neck with dense coriaceous punctation; with small impunctate midline; surface without microsculpture and shiny.

Antennae nearly as long as head and pronotum combined; 2nd antennomere globular and nearly as long as conical 3 rd antennomere; 4 th to 6 th antennomeres more or less quadrate; 7 th to 10 th antennomeres increasing in width and wider than long; except smaller 8 th antennomere.

Pronotum: 0.25 mm long, 0.34 mm wide; rounded in anterior two third; in posterior third emarginate; with small margin in posterior half in front of emargination; anterior half not margined; setiferous punctation more regular; as deep as on head, but less dense; on average distance between punctures as wide as diameter of punctures; without impression on disc; surface without microsculpture and shiny.

Elytra: 0.31 mm long, 0.38 mm wide; with smoothly rounded sides, but not distinctly wider than pronotum; punctation less dense and deep than on pronotum and surface still more shiny.

Abdomen only with segment III with deep transverse impression at base; following segments without transverse impression; setiferous punctures distinctly finer than on fore-body.