Pachycorynus danum, 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 : 257-258

Pachycorynus danum spec. nov.

urn:lsid:zoobank.org:act:5F94A1A5-197B-4DFB-A5FB-C46F25D7F844

( Figs 10-12 , 31 )

Examined material: Holotype ♂: Borneo, Sabah, Danum Valley, 90 km W Lahad Datu, 100 m, Zhou 22.IV.2015 ( cB).

Description: Length of body 3.5 mm; from anterior margin of head to posterior margin of elytra: about 1.9 mm. Head without lateral grooves. Similar to P. kinabaluensis spec. nov. from which differs by the following characters: body ( Fig. 31 ) very flat, brown, with yellowish antennae and legs; head longer and narrower, with smaller eyes and very fine and sparse punctation; pronotum broader, anteriad more dilated, with more oblique anterior margins, not sinuate sides and finer, sparser punctation; elytra narrower, with finer punctation; abdomen with transverse micro-striation and fine punctation.

Tergite and sternite of the male genital segment as in Figs 10-11 . Aedeagus of peculiar shape ( Fig. 12 ) with broad and very short basal bulb; distal portion 0.25 mm long; parameres very narrow, shorter than the median lobe; inner sac with very minute scales.

Etymology: The specific epithet refers to the type locality, as a noun in apposition.

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).