Tumboecus verhaaghi, Irmler, 2015

Irmler, Ulrich, 2015, New Neotropical genera and species of the tribe Osoriini (Coleoptera: Staphylinidae: Osoriinae), Beiträge Zur Entomologie = Contributions to Entomology 65 (1), pp. 173-196 : 180

Tumboecus verhaaghi spec. nov.

( Figs 9A–C , 15E )

Type material: Holotype male: Peru, Huanuco, Panguana (74°56'W, 9°37'S), pitfall trap, male, 3.– 18.06.1984, leg. M. Verhaagh ( UIC).

Paratypes: female with same data as holotype; Peru, Huanuco, Panguana , rainforest, 1 male, 1 female, 20.05. 1984, leg. M. Verhaagh ; rainforest, 4 females, Feb. 1975, 06.05.1975, 08.–09.1975, 10.–11.1975 leg. W. Hanagarth; grassland, female, 03.09.1975, leg. W. Hanagarth; cut rainforest planted with manioc, female, 20.03.1975, leg. W. Hanagarth ( UIC) .

Etymology: The specific name is given in honor of the collector of the species to whom the species is heartily dedicated.

Description: Length: 1.5 mm. Colouration: brown; legs and antennae light brown.

Head: 0.18 mm long, 0.31 mm wide; eyes large, not prominent; longer than temples; sides of forehead strongly convergent; anterior edge of clypeus even; setiferous punctation dense and coarse; neck without punctation; weak microsculpture netlike; surface moderately shiny.

Antennae nearly as long as head and pronotum combined; first antennomere thick; as thick as fourth antennomere; second narrower and oval; third antennomere conical; following antennomeres increasing in width; fourth to ninth wider than long; tenth antennomere approximately quadrate.

Pronotum: 0.31 mm long, 0.36 wide; widest at anterior angles; moderately narrowed to posterior angles in anterior half; more strongly narrowed in posterior half; in front of posterior angles more strongly narrowed; lateral margin fine; in dorsal aspect covered in anterior half; setiferous punctation coarse and large; interstices between punctures irregularly wide; on average, half as wide as diameter of punctures; in lateral posterior half, interstices wider; without microsculpture; surface shiny.

Elytra: 0.39 mm long, 0.38 mm wide; shoulders approximately rectangular; sides subparallel; slightly widened posteriorly; setiferous punctation large and dense; on average, interstices as wide as or slightly shorter than diameter of punctures; with remains of microsculpture; surface shiny.

Abdomen with similar setiferous punctation and similar microsculpture as on fore-body.

Protibia only slightly enlarged; with four spines on outer edge inserting directly on edge; in posterior aspect, comb at inner emargination totally visible; posterior face with several setae; tarsae pentamere.

Aedeagus short and stout; without paramera; apical lobe in rectangular angle to basal lobe; apex moderately acute; endophallus with one torsion.

Diagnosis: The two species T. verhaaghi and T. struyvei are extremely similar regarding the punctation and shape of the pronotum. T. verhaaghi is slightly smaller than T. struyvei and the endophallus is different. Furthermore, the surface of T. verhaaghi is shinier, in particular, the surface of the pronotum.

Figures

Fig. 5–9: Neorhapdopsis brasiliensis (5), N. pecki (6), N. lutzi (7), N. panamae (8), Tumboecus verhaaghi (9), antenna (A), protibia in posterior aspect (B), aedeagus (C); scale bar: 0.1 mm.

Fig. 15: Head, pronotum, and elytra of Ouloglene barberi (A), Oryssma schwarzi (B), O. politum (C), O. exalatum (D), Tumboecus verhaaghi (E), and T. struyvei (F); scale bar: 0.5 mm.