Bolitogyrus solodovnikovi Brunke

Brunke, Adam J., 2017, A revision of the Oriental species of Bolitogyrus Chevrolat (Coleoptera, Staphylinidae, Staphylininae), ZooKeys 664, pp. 1-97 : 51-53

Bolitogyrus solodovnikovi Brunke sp. n. Figs 2E, 5H, 16 I–K, 21A (map)

Type locality.

Ban Thongvay, Muang Paxon, Bolaven Plateau, Champasak, Laos.

Type material.

Holotype (♂, ZMUC): LAOS: Champasak prov.: Bolaven Plt., Muang Paxong, Ban Thongvay, 8-16.vi.2008, N15°14.054, E106°31.867, 1200 m [printed] / A. Solodovnikov & J. Pedersen leg. Edge of disturbed primary rainforest near clearing; flight intercept trap. ZMUC collection. [printed] / HOLOTYPE Bolitogyrus solodovnikovi Brunke, des. A. Brunke 2017 [red label] / AJB0000427 [identifier label].

Paratypes (3 ♀, NMW, ZMUC): Laos: Champasak: Bolaven Plateau, between Paksong and Ban Nam Thang, 26-27.V.1996, H. Schillhammer, 1 ♀, AJB0000575; Bolaven Plataeu, Muang Paxong, Ban Thongvay, 1200 m, 15.234 106.531, edge of disturbed primary rainforest near clearing, fight intercept trap, 8-16.VI.2008, A. Solodovnikov and J. Pedersen, AJB0000576; Bolaven Plateau, Muang Paxong, Ban Hoyayteuy, Mt. Phu Din, 1100 m, 15.054, 106.289, disturbed primary rainforest, on tree fungi, 13-14.VI.2008, A. Solodovnikov and J. Pedersen, AJB0000577 1 ♀, ZMUC00046172 1 ♂.

Diagnosis.

This species may be recognized by the following: head entirely dark; pronotum widest in posterior third; elytra partly dark, discal markings of elytra extending onto epipleuron, forming v-shape (Fig. 2E, 5H); epipleuron not entirely pale (Fig. 5H); frons with only vague traces of microsculpture.

Description.

Measurements ♂ (n = 1): HW/HL 1.35; PW/PL 1.32; EW/ EL 1.24; ESut/PL 0.79; PW/HW 1.05; forebody length 4.6 mm.

Measurements ♀ (n = 3): HW/HL 1.31-1.40; PW/PL 1.30-1.34; EW/ EL 1.18-1.23; ESut/PL 0.80-0.83; PW/HW 1.05-1.08; forebody length 4.8-5.0 mm.

Coloration: head entirely dark; pronotum entirely reddish; scutellum reddish, at least at base, disc of elytra dark with yellow v-shaped, raised marking, base sometimes broadly reddish; epipleuron not entirely pale, with subapical darkened area; abdominal tergites III-V entirely reddish, VI varying from dark with reddish base to entirely reddish; antennomere 1 yellow with darkened apex, 2-5 light brownish-red with darkened apex, 6-10 dark brown, apical segment brownish to dark brown; palpi yellow-brown with apical segment slightly darker; legs yellow, midfemur with ventroapical darkened area, hind femur with apical area of femur darkened.

Head distinctly transverse, dorsal surface with moderately dense, clearly separated asetose punctures, frons with few scattered punctures and distinct Y-shaped impression. Antennomeres 6 quadrate, 7 slightly and 8-10 distinctly transverse, 10 more elongate than 9, 8-10 slightly asymmetrical.

Pronotum slightly transverse to quadrate, about as wide as head, with sparse moderately impressed micropunctation on disc, becoming more distinct on anterior angles. Elytra distinctly transverse, suture distinctly shorter than pronotum at middle.

Abdomen with disc of tergites III-V distinctly, VI narrowly impunctate medially; sternites III-IV with basal line distinctly projected posteriad at middle.

Median lobe in lateral view with narrowed apical portion nearly straight, apex with tooth (Fig. 16J); median lobe in parameral view with expansion in apical two-thirds, with wide basal tooth set on ridge, apical portion evenly converging to acute apex (Fig. 16I); paramere slightly longer than median lobe, elongate spoon-shaped, apex broadly rounded (Fig. 16K); peg setae arranged in thin marginal group, with a fragment of a median group consisting of a few setae basad of marginal group (Fig. 16K); male sternite VIII with distinct but shallow emargination and triangular glabrous area medially; male sternite IX moderately expanded at midlength, with distinct, deep emargination.

Female tergite VIII with median emargination moderately deep and varying from triangular to U-shaped; female tergite X elongate shield-shaped, with moderately projecting and rounded apex, disc distinctly raised, this area longitudinally impressed at middle.

Distribution.

Figure 21A. Known only from the Bolaven Plateau in southern Laos.

Bionomics.

The type series was collected during May-June at 800-1200 m elevation. Specimens were collected using flight intercept traps and from tree fungi.

Etymology.

This species is named in honor of Alexey Solodovnikov (ZMUC). His positive energy and endless support as a PhD supervisor and now, as close colleague and friend, continue to develop the next generation of systematists and push staphylinid research forward.

Comments.

Bolitogyrus solodovnikovi is externally similar to allopatric B. feai and B. mulayitensis (both Myanmar) but can be distinguished by the epipleuron, which is only partly pale.