Orthogonius pectinatus, Tian & Deuve, 2016

Tian, Mingyi & Deuve, Thierry, 2016, Stepwise and cooperative assembly of a cytokinetic core complex in budding yeast Saccharomyces cerevisiae, Belgian Journal of Entomology 42, pp. 1-19 : 1-19

Orthogonius pectinatus sp. nov.

Figs 1–3

ETYMOLOGY. Refers to the pectinated tarsal claws of this new species.

TYPE MATERIAL. Holotype ♂: Vietnam: [S. Vietnam, Nam Cat Tien Nat. Park , 1-15.V.1994, Pacholatko & Dembicky / Mus. Wien / Orthogonius lieftincki Andrewes , det. Kirschenhofer, 2006] ( NHMV).

Paratypes 1♂: [ Thailand, Nakhon Ratchsima , S Khao Luk Chang, 400-470 m, 101.21 E / 14.31.50 N, 28.VIII-6.XI.1998, I. Fritzsche / Coll. Wrase BERLIN] ( CDW) ; 1♂: [Coll. I.R.Sc.N.B. / Vietnam: Ninh Thuan Province, Phuoc Binh N. P., / 12°04’ N, 108°45’ E 26.VII- 1.VIII.2014, Mal. Trap / Leg. J. Constant & J. Bresseel /GTI project, 32.779] ( RBINS) .

DIAGNOSIS. This new species is probably allied to O. medanensis Tian & Deuve, 2006 , but differs in: body broader, claws strongly pectinated and aedeagus more bent ventrally, the apical lamella longer and narrower.

DESCRIPTION.

Length: 11.5 mm; width: 4.5 mm. Habitus as in Fig 1 . Head, ventral side of head and thorax black; pronotum, elytra, tibiae and abdominal ventrites dark brown; clypeus, labrum, mandibles, palpi, mentum, antennae, pronotal side margins and tarsi brown; femora yellow; body moderately shiny, rather broad; head and pronotum faintly striate, surface covered with small and sparse punctures; microsculptural meshes isodiametric on surface.

Head: wider than long, HL/HW=1.1; eyes very large; vertex moderately convex; frontal impressions faint; clypeus bisetose, surface even; labrum six setose, slightly emarginated at apical margin; ligula small, not expanded at apex, bisetose; palpi slender, subcylindrical, 3 rd maxillary palpomere as long as 4 th, glabrous; 2 nd labial palpomere as long as 3 rd, bisetose inner margin, and with two additional setae at subapex and apex; 3 rd labial palpomere sparsely pubescent; palpigers setose, mentum without tooth; mentum and submentum each with one pair of setae (but left side of mentum with an additional seta); antennae long, reaching basal third of elytra, pubescent from apical two third of 4 th antennomere; 3 rd antennomere shorter than 4 th..

Pronotum: transverse, PW/PL=1.6, sides evenly rounded, widest at mid-length; both basal and fore margins beaded; lateral expanded margins well defined, flat; fore and hind angles broadly rounded; disc moderately convex; fore and hind transversal impressions well marked; basal foveae small but deep.

Elytra: elongate ovate, EL/EW=1.3, convex; basal border complete; sides parallel at middle; widest at about mid-length; striae deep; intervals distinctly convex, subequal to each other in width in middle; apex broad; inner angle rather acute; 3 rd interval with three setiferous pores.

Legs: legs moderately developed; middle and hind coxae smooth and glabrous; fore tibiae slightly dilated and obliquely truncate at apex, with outer apical angle nearly rectangular and outer margin subserrate; middle tibiae rather straight; apex of hind tibiae hardly dilated, with apical spurs long and sharp; 3 rd hind tarsomere much longer than 4 th which is faintly emarginate at apex; all claws strongly pectinate.

Ventral side: prosternal process well bordered at apex; ventrite VII finely emarginated at apical margin in male.

Male genitalia ( Figs 2–3 ): median lobe of aedeagus rather stout, bent ventrally, with apex gradually pointed; apical lamella long and narrow.

Female. Unknown.

DISTRIBUTION. South Vietnam and southern Thailand.

Figures

Figs 1–3. Orthogonius pectinatus sp. nov. 1. habitus, holotype, male; 2–3. aedeagus, lateral view and apical lamella, dorsal view.