Bolitogyrus kitawakii Smetana & Zheng, 2000

Brunke, Adam J., 2017, A revision of the Oriental species of Bolitogyrus Chevrolat (Coleoptera, Staphylinidae, Staphylininae), ZooKeys 664, pp. 1-97 : 17

Bolitogyrus kitawakii Smetana & Zheng, 2000 Figs 1B, 3 E–H, 19B (map)

Cyrtothorax kitawakii Smetana & Zheng, 2000a: 56.

Bolitogyrus kitawakii : Hu et al. 2011.

Bolitogyrus kitawakii : Cai et al. 2015.

Type locality.

Bashan, Dabashan, Chengkou Xian, Chongqing, China.

Type material.

The type series of this recently well illustrated ( Cai et al. 2015) species was not examined.

Other material.

CHINA: Shaanxi: Qinling mountains, Xunyangba env., 1200 m, 20.V.-10.VI.2000, 4 ♂, 6 ♀ (cHay), AJB0000444, AJB0000445, AJB0000446, AJB0000447, AJB0000448, AJB0000449, AJB0000450, AJB0000451, AJB0000452, AJB0000453. Sichuan: Nanjiang County, Micang Shan, Bazhong City, 1798 m, 32.664 107.029, 27-28.IV.2008, H. Huang & W. Xu, 1 ♂, AJB0000454 (SNUC).

Diagnosis.

Among the members of the Electus Group: many head punctures confluent (Fig. 3F); elytra bright metallic blue-green; paramere distinctly constricted in basal third, median lobe clearly visible in parameral view (Fig. 9E); peg setae with median group extended basad of marginal group (Fig. 9G); apex of median lobe in lateral view forming a shorter triangle (Fig. 9F), in parameral view forming an obtuse angle (Fig. 9H).

Redescription.

Measurements ♂ (n = 5): HW/HL 1.28-1.31; PW/PL 1.25-1.32; EW/ EL 1.21-1.34; ESut/PL 0.91-0.94; PW/HW 1.08-1.12; forebody length 4.4-4.8 mm.

Measurements ♀ (n = 5): HW/HL 1.28-1.33; PW/PL 1.27-1.33; EW/ EL 1.29-1.36; ESut/PL 0.88-0.92; PW/HW 1.08-1.13; forebody length 4.7-4.8 mm.

Similar to B. electus and differing only in the following: body bicolored, head dark with moderate metallic greenish-bronze reflection, pronotum entirely pale, reddish-orange, elytra dark, with bright metallic green to blue reflection, abdominal segments III-V entirely reddish-orange, segment VI reddish-orange with narrow part of apex dark, segments VII-VIII entirely dark; palpi entirely pale; antennomeres slightly but successively darker; forecoxae and tibia entirely yellowish-brown; head slightly less transverse; elytra very slightly longer than pronotum at middle; dorsal surface with punctures more deeply impressed and often confluent (Fig. 3F); pronotum with sides more strongly explanate; sternites III-V with basal line sharply (III-IV) or weakly (V) projected posteriad at middle; median lobe in lateral view without expansion, with slight expansion, with moderately-sized pair of lateral teeth (Fig. 9F); median lobe in parameral view with obtuse apex (Fig. 9H); paramere distinctly longer than median lobe, slightly more constricted in basal third (Fig. 9E); male sternite IX not distinctly widened at midlength, markedly more elongate; female tergite X shorter, with slightly broader apex.

Distribution.

Figure 19B. Known from Chongqing, Sichuan, and Shaanxi provinces of China.

Bionomics.

Specimens have been collected at elevations ranging from 1200-1900 m during April-June and once in August. Bolitogyrus kitawakii ( B. cyanipennis probably similar) is unique within the genus for its occurrence in warm-temperate forests that experience coldest monthly mean temperatures of below freezing (-1°C) (Brunke et al. in prep).

Comments.

The Shaanxi locality reported here is slightly north of the northernmost record of the genus (also for this species) ( Cai et al. 2015). Bolitogyrus kitawakii cannot be externally distinguished from the allopatric B. cyanipennis but differs by the differently shaped paramere, arrangement of peg setae and shorter apex of the median lobe.