Bolitogyrus nigropolitoides Brunke, 2022

Brunke, Adam J., 2022, Revision of rove beetle genus Bolitogyrus Chevrolat (Staphylininae, Cyrtoquediini). Supplement 1, ZooKeys 1096, pp. 1-16 : 1

Bolitogyrus nigropolitoides Brunke sp. nov.

Figs 1F , 2H, J

Type locality.

Phia Oac National Park, Cao Bang, Vietnam.

Type material.

Holotype (male, CNC): Vietnam, Cao Bang, Phia Oac Nat. Park, summit rd., behind upper FIT, 22°36'21.60"N, 105°52'19.20"E, 1600 m, mat. secondary forest, fogging standing dead tree w/ orange fungus, 7-17.V.2019, A. Brunke & H. Schillhammer, CNC1898850 [typed label] / Bolitogyrus nigropolitoides Brunke, des. Brunke, 2021 [red label]

Etymology.

The species epithet refers to the similar species B. nigropolitus from Sichuan, China.

Diagnosis.

Within the Electus group (for diagnosis, see Brunke and Solodovnikov 2014): abdomen entirely dark; head without deeply impressed punctures; lateral face of hind tibia bicolored, distal half distinctly paler than darkened part of hind femur; antennomere 5 subquadrate, 6 distinctly transverse (Fig. 1F ); paramere slightly longer than median lobe, in ventral view median lobe not visible; paramere with apical part broadly rounded to apex (Fig. 2J ); median lobe in lateral view with smaller subapical expansion (Fig. 2H ).

Description.

Measurements ♂ (n = 1): HW/HL 1.30; PW/PL 1.17; EW/EL 1.12; ESut/PL 0.85; PW/HW 1.09; forebody length 4.5 mm.

Very similar to Bolitogyrus nigropolitus (Fig. 2G , 2I ) except: antennae shorter, antennomere 5 subquadrate, 6 distinctly transverse (Fig. 1F ); pronotum slightly less transverse; elytral slightly longer; paramere slightly longer than median lobe, in ventral view median lobe not visible with paramere in situ; paramere with apical part broadly rounded to narrower apex (Fig. 2J ); median lobe in lateral view with subapical expansion much smaller (Fig. 2H ).

Distribution.

This species is known only from Phia Oac National Park in northern Vietnam, though it likely occurs at similar elevations in neighboring Yunnan, China and elsewhere in northern Vietnam east of the Red River.

Bionomics.

The holotype was pyrethrin-fogged from a dead standing tree, bearing orange-fungal fruiting bodies.

Caesareus group

Figures

Figure 1. A-C habitus of Bolitogyrus erythrurus (Kraatz) A non-type, Panama B syntype, " Nova Grenada " C non-type, " Nova Grenada " D, E pronotum, lateral view D B. viridescens Brunke E B. pseudostrigifrons Brunke F antenna of B. nigropolitoides Brunke. Scale bars: 1 mm (A, B); 0.5 mm (D-F).

Figure 2. Male genitalia A, C, E Bolitogyrus strigifrons (Wendeler) B, D, F B. pseudostrigifrons Brunke G, I B. nigropolitus Smetana H, J B. nigropolitoides A, B, G, H median lobe in lateral and C, D ventral view. E, F, I, J inner face of paramere, apex. Scale bars: 0.5 mm (A-D, G, H); 0.1 mm (E, F, I, J).