Pachycorynus sabahensis, Bordoni, 2017

Bordoni, Arnaldo, 2017, New data on the Oriental Xantholinini. 44. New species and new records from Nepal, Malaysia, Vietnam, Philippines, Sumatra, and Sabah (Coleoptera Staphylinidae), Beiträge Zur Entomologie = Contributions to Entomology 67 (2), pp. 255-264 : 256-257

Pachycorynus sabahensis spec. nov.

urn:lsid:zoobank.org:act:8A46B980-607F-4D0F-8D32-11DB0F4EDEFC

( Figs 1-3 , 28 )

Examined material: Holotype ♂: Borneo, Sabah, Ranau, Poring H. S., 500 m, Zhou 18.IV.2015 ( cB); paratypes: same data, 2 ♀♀ (cB).

Description: Length of body 5.4 mm; from anterior margin of head to posterior margin of elytra: about 2.7 mm. Head with lateral groove from the posterior margin of eyes to the posterior angles of head. Body ( Fig. 28 ) dark reddish brown, with yellowish posterior half of elytra; antennae and legs brown. Head sub-quadrangular, with sub-rectilinear and sub-parallel sides. Eyes small and not protruding. Surface of head without lateral grooves, with more or less longitudinal, fine micro-striation and some evident punctures. Pronotum shorter and narrower than head, with oblique anterior margins, rounded anterior angles and not sinuate sides. Surface with more or less horizontal microstriation and 3 series of evident punctures to the sides of a median stripe. Elytra sub-rectangular, with subrectilinear and sub-parallel sides and marked humeral angles. Surface with numerous, closed series of very fine punctures. Abdomen with fine, closed, transverse microstriation and very fine punctation.

Tergite and sternite of the male genital segment as in Figs 1-2 . Aedeagus ( Fig. 3 ) filiform, with very long and narrow, semitransparent basal bulb; distal portion 0.44 mm long, with acute median lobe; parameres long, arched and narrow; inner sac with series of very fine, minute scales.

Etymology: The specific epithet refers to Sabah.

Distribution: The species is known only from the type locality.

Figures

Figs 1–12: Tergite and sternite of the male genital segment and aedeagus of Pachycorynus sabahensis spec. nov. (1–3), P. balaneion

Figs 28–31: Habitus of Pachycorynus sabahensis spec. nov. (total lenght 5.4 mm) (28), P. balaneion spec.nov. (total lenght: 5 mm) (29) P. kinabaluensis spec. nov. (total lenght: 3.5 mm) (30) and Pachycorynus danum spec. nov. (total lenght: 3.5 mm) (31) (photo: S. Cuoco).