Oedichirus giachinoi, Rougemont, 2018

Rougemont, Guillaume de, 2018, The genus Oedichirus in New Caledonia (Staphylinidae: Paederinae: Pinophilini), Linzer biologische Beiträge 50 (1), pp. 537-586 : 548-549

Oedichirus giachinoi nov.sp. (Figs 34)

Material studied: ♂ Holotype: Nouvelle Calédonie, La Foa Col d’Amieu , m 500, 8♀ II.2006. P.M. Giachino leg. ♀ HOLOTYPE Oedichirus giachinoi Des, 2016 G. de Rougemont [ AMNH] 1♂ paratype: NEW CALEDONIA, Col d’Amieu , N of La Foa, 500 m, S.&J. Peck, 9.VIII.1978, rainforest litter ♀ PARATYPE: Oedichirus giachinoi des . 2017 G. de Rougemont [ FMC]; 1♂ & 1♀ paratypes: NEW CALEDONIA, Col de Mouirange , 30 km E Nouméa, 300 m, 11.VIII.78, S.&J. Peck, berl. forest litter ♀ PARATYPE Oedichirus giachinoi des . 2017 G. de Rougemont [ FMC & CRO].

Additional material: 2♂♂: NOUVELLE-CALEDONIE, Province-Sud, Sarraméa, Col d’Amieu, 19-xii.2007, 11.i.2008 ♀ 21º34.400S – 165º45.670E, 410 m, Flight intercept Trap, T. Théry leg. ♀ Oedichirus giachinoi n. sp. det. 2017 G. de Rougemont [CTP].

Description: length: ca. 8 mm; length of fore-body: 3; length of head: 0.88; breadth of head: 0.97; length of antenna: 2.2; length of pronotum: 1.2; breadth of pronotum: 1.75; length of elytron: 1.12; breadth of elytra: 1.17. Vertex of head black, surrounding areas dark reddish-brown, middle of pronotum black, sides dark reddish-brown, elytra reddish-brown; abdominal tergites reddish brown, the middle of tergite III narrowly, on following tergites increasingly broadly black; palpi, antennae and legs testaceous. Fore-body devoid of microsculpture; abdominal tergites entirely covered in weak dense micro-striae. Body glabrous. Habitus: Fig. 34h.

Head moderately transverse; eyes larger, longer than temples, the latter evenly rounded, coarctate with base; groove of post-ocular border displaced from carina on lateral margin to dorsal surface; puncturation sparse, with a cluster of a few umbilicate punctures on vertex and very few scattered smaller punctures elsewhere. Pronotum moderately elongate, behind anterior angles markedly wider than head, the sides retracted in straight lines to base; lateral margns entirely bordered; puncturation coarse and dense, the punctures simple, much larger than those of head, elongate in antero-median area, sparse near anterior angles, nowhere forming series. Elytra short, humeral angles completely obsolete, the sides strongly divergent in anterior half, parallel in posterior half; puncturures coarse but shallow, close near suture, increasingly sparse laterally, not forming series. Keels and grooves on anterior margins of tergites fairly long but shallow, with a transverse row of small punctures adjacent to them; puncturation on rest of tergites very sparse; tergites VII and VIII impunctate.

Male: abdominal sternite VIII: Fig. 34s8; aedoeagus: Fig. 34arl.

Female: sternite IX: Fig. 34vp.