Pachycorynus balaneion spec. nov.

urn:lsid: zoobank.org:act: 47CA5C2C-68C2-4528-877E-CBF7E05FFA44

(Figs 4-6, 29)

Examined material: Holotype ♂: Borneo, Sabah, Ranau, Poring H. S., 500 m, Zhou 18.IV.2015 (cB).

Description: Length of body 5 mm; from anterior margin of head to posterior margin of elytra: about 2.5 mm. Head with lateral groove from the posterior margin of eyes to the posterior angles of head. Body (Fig. 29) similar to that of P. sabahensis spec. nov. from which differs by the following characters: body smaller and narrower, elytra unicolor and narrower, proportionately longer; head with finer punctation; pronotum with finer and sparser punctation; elytra with denser punctation.

Tergite and sternite of the male genital segment as in Figs 4-5. Aedeagus (Fig. 6) with shorter basal bulb compared to that of P. sabahensis; distal portion 0.37 mm long, whit rounded apex; parameres long, significantly longer than median lobe, dilated in distal portion; inner sac with minute scales.

Etymology: The specific epithet is the Greek βαλανειον (spa bath), in relation to the local structures of hot water.

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