Gallerucida nigra (Wang, Li & Yang, 2000) Feng & Yang & Li & Liu, 2022

Feng, Chuan, Yang, Xing-Ke, Li, Zhi-Qiang & Liu, Yang, 2022, Revision of Sphenoraia Clark, 1865 (Coleoptera, Chrysomelidae, Galerucinae) from China, with descriptions of two new species, ZooKeys 1132, pp. 51-83 : 51

Gallerucida nigra (Wang, Li & Yang, 2000) comb. nov.

Fig. 14A-C

Sphenoraia (Sphenoraia) nigra Wang, Li & Yang, 2000: 118.

Type specimens examined.

Holotype: ♀, China, Gansu Province, Dangchang ; 1700-2300 m; 9 Jul. 1998; Shuyong Wang leg.; IZAS. Paratype : 1♀, China, Gansu Province, Wen Country ; 1400 m; 2 Jun. 1992; Hongjian Wang leg.; IZAS . 1♀, China, Gansu Province, Zhouqu ; 2350 m; 5 Jul. 1998; Jun Chen; IZAS .

Other specimens examined.

1♀, China, Henan, Baiyun Mountain ; 1900 m; 23. Jul. 2002; Lijie Zhang leg.; IZAS .

Description.

Female. Length: 6.6-6.8 mm, width: 4.0-4.5 mm.

Head, antennae, pronotum, scutellum, ventral surface of the body, and legs black, elytra brown; each elytron with eight black spots, basal and middle sections with one pair of spots, subapical area with three spots and apical area with one spot.

Vertex finely and sparsely covered with punctures; frontal tubercles distinctly raised, separated from each other by a deep furrow; antennae short, robust, extend to the middle of the elytra; antennomeres 1-3 thin, shiny; antennomeres 4-11 wide and flat, with short hairs, each approximately 2.5 × as long as wide; antennomere 2 shortest, antennomere 3 slightly longer than 2, 1.5 × as long as second; antennomere 4 longest, 1.2 × as long as antennomeres 2 and 3 combined; antennomeres 5-10 unequal in length, shorter than 4; antennomere 11 slightly longer than 10, pointed.

Pronotum approximately 1.8 × as wide as long, with rounded lateral margins; disc slightly convex, sparsely covered in middle with small punctures with large punctures laterally.

Scutellum triangular, smooth, impunctate.

Bases of both elytra wider than pronotum, gradually widen posteriorly and rounded at apex; dorsal surface slightly convex, irregularly covered with large and deep punctures, the interstices between punctures slightly wider than the diameter of individual punctures and covered with small punctures.

Metasternum 2.5 × as long as mesosternum, Anterior metasternal process extending beyond the front edge of the meso-coxal cavities; prothoracic legs shortest, mesothoracic legs slightly longer, metathoracic legs longest.

Notes.

According to the anterior metasternal process clearly extending beyond the front edge of the meso-coxal cavities, Sphenoraia (Sphenoraia) nigra is transferred from Sphenoraia to Gallerucida .

Distribution.

China: Henan, Gansu.

Figures

Figure 14. Gallerucida nigra. comb. nov. A-C habitus A dorsal view B ventral view C lateral view. Scale bars: 1 mm.