Orphnebius cernens, Assing, 2016

Assing, Volker, 2016, On some Lomechusini of the Palaearctic and Oriental regions (Coleoptera: Staphylinidae: Aleocharinae), Beiträge Zur Entomologie = Contributions to Entomology 66 (1), pp. 13-111: 46-47

publication ID

http://doi.org/ 10.21248/contrib.entomol.66.2.201-255

persistent identifier


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scientific name

Orphnebius cernens

spec. nov.

Orphnebius cernens   spec. nov.

( Figs 2, 24, 202–206)

Type material: Holotype ♂: “Lao-NE, Hua Phan prov., 20°12'N 104°01'E, Phu Phan Mt. , ~ 1750 m, 17.v.–3.vi. 2008, Vít Kubáň leg. / Holotypus ♂ Orphnebius cernens   sp. n., det. V. Assing 2015” ( NHMB). GoogleMaps  

Paratypes: 5 ♂♂, 1 ♀, 3 sex?: same data as holotype ( NHMB, cAss) GoogleMaps   .

Etymology: The specific epithet is the present participle of the Latin verb cernere (to see) and alludes to the large eyes.

Description: Body length 3.6–4.2 mm; length of forebody 1.5–1.7 mm. Coloration: head black; pronotum and elytra blackish-brown to black; abdomen pale-reddish; legs with reddish to dark-brown femora and reddish tibiae and tarsi; antennae with antennomeres I–IV reddish and V–XI dark-brown to blackish-brown, V and X rarely paler; maxillary palpi brown to dark-brown with yellowish terminal palpomere.

Head ( Fig. 24) transverse, 1.3 times as broad as long; posterior angles completely obsolete; posterior margin of disc convex; punctation fine and sparse; median dorsal portion extensively impunctate; interstices without microsculpture. Eyes very large, reaching posterior margin of head. Antenna ( Fig. 2) approximately 1.1 mm long, moderately incrassate, and moderately asymmetric; antennomere IV small and weakly transverse; antennomeres V–X asymmetric, of gradually increasing width, and increasingly transverse; X nearly twice as broad as long; XI strongly elongate, slightly longer than the combined length of VIII–X.

Pronotum ( Fig. 24) moderately transverse, 1.25– 1.30 times as broad as long and 1.10–1.15 times as broad as head, moderately convex in cross-section; posterior angles weakly marked; disc with a median pair of punctures, otherwise nearly impunctate; margins with additional punctures; lateral margins each with three long, stout, and erect black setae.

Elytra ( Fig. 24) approximately 0.85 times as long as pronotum; suture distinctly gaping posteriorly; punctation moderately sparse and fine; pubescence pale, fine, long, and sub-erect or depressed on disc. Hind wings fully developed. Metatarsomere I approximately as long as the combined length of II and III.

Abdomen: tergites III–VI with a lateral setiferous puncture on either side and with four setiferous punctures at posterior margin (individual punctures may be missing); tergite VII with oblong non-setiferous punctation across median portion, anterior and posterior portions without such punctation, with a transverse row of setiferous punctures near posterior margin, posterior margin with palisade fringe; tergite VIII with a marginal and a submarginal row of long setae, posterior margin broadly convex; sternite VIII with broadly convex posterior margin.

♂: hemi-tergites IX and tergite X with extremely dense and long pubescence ( O. hauseri   type); median lobe of aedeagus (Figs 202–203) approximately 0.65 mm long; ventral process straight in lateral view and of subtriangular shape in ventral view; internal sac with large and strongly sclerotized structures; paramere (Figs 204–205) approximately 0.6 mm long, condylite distinctly shorter than paramerite, stout, curved, and with very short velum. ♀: spermatheca (Fig. 206) of similar shape as in other species of the O. hauseri   subgroup.

Comparative notes: Among the species of the O. hauseri   subgroup, O. cernens   is most similar to O. dishamatus ASSING, 2015   ( China: Yunnan) both in external and in sexual characters. It is distinguished from that species by larger and more bulging eyes, a distinctly longer antennomere XI with parallel margins ( O. dishamatus   : with weakly convex margins), and by the morphology of the aedeagus ( O. dishamatus   : ventral process slightly shorter and with a less distinctly marked apex in ventral view; condylite of paramere straight). For illustrations of O. dishamatus   see ASSING (2015e).

Distribution and natural history: The type locality is situated in Hua Phan province, North Laos, at an altitude of approximately 1750 m. Orphnebius lunatus   , O. fuscapicalis   , O. fusicollis   , O. spoliatus   , and an unnamed species were collected in the same locality.


Natural History Museum Bucharest