Neorhabdopsis panamae (IRMLER, 2005) 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 : 179

Neorhabdopsis panamae spec. nov.

( Figs 8A–C , 16D )

Type material: Holotype male: Panama, Colon, Parque Nac. Soberania Pipeline Rd. (79°45'W, 9°07'N), collected from soil/leaf litter, 23.05.1995, leg. J. Jolly & C. Chaboo ( KNHM).

Etymology: The specific name derived from the country where the species was collected.

Key to species of the genus Neorhabdopsis Description: Length: 1.7 mm. Colouration: reddish; legs and antennae yellow.

Head: 0.23 mm long, 0.32 mm wide; without eyes; clypeus semicircular; labrum rectangular; setiferous punctation coarse and dense; punctures large; interstices between punctures one fourth as wide as diameter of punctures; on small parts of vertex and at base of antennae wider; without microsculpture; surface shiny.

Antennae slightly shorter than head and pronotum combined; first antennomere approximately rectangular; second antennomere nearly as thick as first, but oval; third antennomere conical and slightly narrower than second; following antennomeres increasing in width; fourth antennomere nearly quadrate; tenth antennomere nearly twice as wide as long.

Pronotum: 0.30 mm long, 0.37 mm wide; widest in middle; slightly narrowed to anterior angles; more strongly convergent to posterior angles; lateral margin extremely fine; in dorsal aspect, only visible in short part close to posterior angles; posterior angles nearly rectangular; setiferous punctation coarse and dense; more homogeneous than on head; punctures large; interstices between punctures less than half as wide as diameter of punctures; narrow midline impunctate; setae longer than diameter of two punctures; pointing transversely to posterior middle; interstices and punctures with netlike microsculpture; surface shiny.

Elytra: 0.29 mm long, 0.37 mm wide; along suture impressed; setiferous punctation as coarse as on pronotum; punctures as large as on pronotum; interstices between punctures slightly wider than on pronotum; netlike microsculpture as on pronotum; surface shiny.

Abdomen slightly widened from abdominal segment III to VII; setiferous punctation similar as on pronotum; on posterior segments less dense than on anterior segments; microsculpture as on pronotum; surface shiny.

Protibia slightly widened; with few spines on outer edge; tarsae of all legs with five tarsomeres.

Aedeagus with shortly curved apical lobe ending in short acute apex; paramera not longer than apical lobe and with one long seta; spiral endophallus with several torsions.

Diagnosis: The species is separated from the other three species of the genus by the longer elytra. In contrast to the 1. Pronotum without slight emargination in front of posterior angles ............................................................................ 2

- Pronotum with distinct emargination in front of posterior angles ................................................. N. lutzi spec. nov.

2. Elytra nearly twice as wide as long, smaller, 1.5 mm long ................................................................ N. pecki spec. nov.

- Elytra longer, length: width ratio at least 0.7, larger, 1.7 mm long ............................................................................... 3

3. With deep microsculpture, punctation sparser, interstices between punctures half as wide as diameter of punctures ........................................................................................................................................................ N. brasiliensis spec. nov.

- With weak microsculpture, punctation deeper and denser, interstices between punctures less wide than half of diameter of punctures .................................................................................................................... N. panamae spec. nov. other three species, the elytra of N. panamae are nearly quadrate. The length: width ratio is 0.8, whereas it is 0.7 or 0.6 in the other three species.

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. 16: Head, pronotum, and elytra of Neorhabdopsis brasiliensis (A), N. pecki (B), N. lutzi (C), N. panamae (D), Neosorius brasiliensis (E), and N. mexicanus (F); scale bar: 0.5 mm.