The Neotropical species of the genera Pseudespeson L, 1994 and Espeson S, 1882 (Coleoptera: Staphylinidae: Osoriinae) Author Irmler, U. text Beiträge Zur Entomologie = Contributions to Entomology 2012 2012-12-20 62 2 331 360 journal article 6439 10.21248/contrib.entomol.62.2.331-360 4e2d6f56-fddc-4e28-bfd5-065db656475d 0005-805X 4812872 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.