Oedichirus vulcanus, Rougemont, 2018

Rougemont, Guillaume de, 2018, New oriental Oedichirus (Staphylinidae, Paederinae, Pinophilini), Linzer biologische Beiträge 50 (1), pp. 461-536 : 506-507

Oedichirus vulcanus nov.sp. (Figs 34)

M a t e r i a l s t u d i e d: ♂ Holotype: F.C. DRESCHER, G. Tankoeban Prahoe 4000-5000 Voet Preanger Java, VI.1936 / M. Cameron Bequest BM 1955-147 / HOLOTYPE Oedichirus vulcanus Des. 2015 G. de Rougemont [NHML].

A d d i t i o n a l m a t e r i a l: 1♀: G. Tankoeban Prahoe 4000-5000 Voet Preanger Java, I.1937 / sp. n. / M. Cameron Bequest BM 1955-147 / Oedichirus vulcanus Rgmt. det. 2016 G. de Rougemont [ NHML] ; 1♀: INDONESIA: W Java, Gede-Pangrango Nat. P. near Headquarrters, 1550m forest litter, lg. Schuh 23.8.1994 / Oedichirus vulcanus Rgmt. det. 2015 G. de Rougemont [ NHMW] .

D e s c r i p t i o n: length: 6.8-7.5 mm; length of fore-body: 3.2; length of head: 1; breadth of head: 1.22; length of antenna: 2.2; length of pronotum: 1.4; breadth of pronotum: 1.25; length of elytron: 1.08; breadth of elytra: 1.35. Body deep black, palpi brown, antennae reddish-brown, legs piceous, apices of metatibiae and all tarsi testaceous. Body devoid of microsculpture except on row of basal keels of abdominal tergites, where it is very evident. Pubescence mixed, dark and pale, short and moderately long. Habitus: Fig. 34h.

Head strongly transverse; carina of post-oular border strongly salient, forming a dentiform angle immediately hehind eye; puncturation fairly sparse, consisting of a pair of frontal punctures, a transverse row of six punctures between antennal tubercles, a pair of inter-ocular punctures behind that, a row of three closely set larger punctures on vertex, a row of four punctures before base, a few ocular punctures and the usual small punctures in post-ocular groove. Pronotum relatively short, broader than head; lateral margins bordered in anterior half; puncturation consisting of a pair of arcuate series of six punctures each, a transverse row of small punctures before than, a pair of punctures behind anterior margin, two lateral punctures in anterior half, and numerous punctures on anterior amgles and lateral margins. Micropterous, elytra small, humeral angles completely obsolete; disc with a transverse row of six punctures behind anterior margins, on each elytron with a sutural series of six closely-set punctures, three lateral series of respectively three, five and four punctures, and small punctures near lateral margins. Abdominal tergite III without a basal row of keels and grooves, the keels on following tergites long, punctures arranged in three discrete rows, without a row adjacent to keels and groves.

Male: abdominal sternite VIII: Fig. 34s8, the posterior margin with a pair of combs of red spines enclosed by a pair of combs of larger, darker spines, these two combs disposed in an asymmetrical inverted V pattern; aedoeagus: Figs 34arl, 34av, the right paramere slender and sinuate, left paramere wanting.