Bolitogyrus doesburgi (Scheerpeltz, 1974)

Brunke, Adam J., 2017, A revision of the Oriental species of Bolitogyrus Chevrolat (Coleoptera, Staphylinidae, Staphylininae), ZooKeys 664, pp. 1-97 : 62-64

Bolitogyrus doesburgi (Scheerpeltz, 1974) Figs 18 G–I, 20A (map)

Cyrtothorax doesburgi Scheerpeltz, 1974: 187.

Type locality.

Mt. Muria ("Gn. Moeria"), Central Java.

Type material.

Cyrtothorax doesburgi Scheerpeltz, 1974.

Holotype (♂, NMW): P.H. v. Doesburg, Java: Gg Moeria [Muria], Tjolo, 700-1000 m, 12-II-1913 [printed] / Cyrtothorax doesburgi Scheerpeltz [handwritten] / Doesburgi Scheerpeltz [handwritten] / TYPUS Cyrtothorax doesburgi O. Scheerpeltz [red label] / ALLOTYPUS [red label] / ♀ [printed] / coll. Scheerpeltz [blue printed label] / AJB0000393 [identifier label].

Scheerpeltz (1974) stated that his specimen was a female, when actually it is a male.

Diagnosis.

Bolitogyrus doesburgi is easily recognized by the uniformly reddish elytra and the minutely expanded pronotal margin.

Redescription.

Measurements ♂ (n = 1): HW/HL 1.32; PW/PL 1.30; EW/ EL 1.19; ESut/PL 0.89; PW/HW 0.98; forebody length 6.0 mm.

Coloration: body dark; elytra reddish; abdominal tergite III mostly dark with lateroapical areas reddish, IV with middle dark and remaining area reddish, V entirely reddish, VI-VII dark with base and apex reddish, VIII dark; antennomere 1 yellow, II-V reddish, 6-10 dark brown, 11 pale yellow; palpi yellowish, apical segment darkened; legs yellowish, femora with dorsal surface darkened.

Head distinctly transverse; dorsal surface with moderately dense, clearly separated asetose punctures, frons with coarse depressions in addition to usual frontal impressions and with scattered punctures, frons bearing a pair of setose punctures between anterior frontal punctures. Antennomeres 7-10 transverse and asymmetrical.

Pronotum distinctly transverse, convex and with micropunctures scattered on disc, becoming rather dense on anterior angles. Elytra slightly transverse, slightly shorter than pronotum at middle, in addition to usual macrosetal rows on disc, scattered punctures bearing setae, nearly all punctures setose on epipleuron of elytron.

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

Median lobe in lateral view gradually narrowed apicad to level of single median, apical tooth formed from projection of apical carina, apex of median lobe slightly constricted apicad of tooth, median lobe with pair of basal teeth at about midlength (Fig. 18G); median lobe in parameral view elongate, asymmetrically sinuate in apical half (Fig. 18H); paramere slightly longer than median lobe, apical half leaf-shaped and slightly asymmetrical, peg setae arranged in thin marginal group and sparse medial group, marginal group broadens at apex into a pair of triangular shapes, median group consisting of a paired row extending basad of marginal group (Fig. 18I); male sternite VIII with shallow emargination and triangular glabrous area medially; male sternite IX moderately expanded at midlength, with distinct emargination.

Female unknown.

Distribution.

Figure 20A. Known only from the type locality on Mt. Muria, Central Java.

Bionomics.

The holotype was collected in February at 700-1000 m.

Comments.

Bolitogyrus doesburgi is the only Oriental species of the genus with an asymmetrical aedeagus.