Sphenoraia (Sphenoraioides) rutilans (Hope, 1831)

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

Sphenoraia (Sphenoraioides) rutilans (Hope, 1831)

Fig. 9A-F

Eumolpus rutilans Hope, 1831: 30.

Chrysomela mutabilis Hope, 1831: 30. Synonymized by Maulik 1936: 547.

Galleruca fulgida Kollar & Redtenbacher, 1844: 554. Synonymized by Maulik 1936: 547.

Sphenoraia cyanea Allard, 1890: 92. Synonymized by Laboissière 1940: 30.

Sphenoraia (Sphenoraioides) rutilans : Gressitt and Kimoto 1963: 657.

Other specimens examined.

1♂, China, Yunnan Province, Xishuangbanna, Menglun ; 600 m; 22 Apr. 1994; Longlong Yang leg.; IZAS . 1♂, China, Yunnan Province, Xishuangbanna, Mengla ; 620-650 m; 2 May 1959; Facai Zhang leg.; IZAS . 1♂, China, Yunnan Province, Xishuangbanna, Mengla ; 620-650 m; 3 May 1959; Facai Zhang leg.; IZAS . 1♂, China, Yunnan Province, Xishuangbanna, Mengla ; 620-650 m; 3 May 1959; Facai Zhang leg.; IZAS . 1♀, China, Yunnan Province, Xishuangbanna, Mengla ; 800 m; 1 Jun. 1958; Shuyong Wang leg.; IZAS . 2♂♂ 1♀, China, Yunnan Province, Xishuangbanna, Menghun ; 1200-1400 m; 3 Jun. 1958; Shuyong Wang leg.; IZAS . 1♂, China, Yunnan Province, Yiwubannan, Menglun ; 650 m; 3 Aug. 1959; Yiran Zhang leg.; IZAS . 1♀, Yunnan Province, Xishuangbanna, Damenglong ; 650 m; 5 Oct. 1958; Zhizi Chen leg.; IZAS . 1♀, Yunnan Province, Xishuangbanna, Damenglong ; 650 m; 7 Oct. 1958; Zhizi Chen leg.; IZAS .

Description.

Male. Length 7.8-8.2 mm, width 4.9-5.2 mm.

Body dark blue, antennae brown.

Vertex finely and sparsely covered with punctures; frontal tubercles distinctly raised, each separated from each other by a deep furrow; antennae short, robust, extended to the middle of the elytra; antennomeres 1-3 thin, shiny; antennomeres 4-11 wide and flat, with short hairs, antennomere 4 approximately 1.5 × as long as wide; antennomeres 5-6, each approximately 1.2 × as long as wide; the length of each of antennomeres 7-9 equals its width; antennomere 10 approximately 1.2 × as wide as long; antennomere 11 approximately 1.2 × as long as wide; antennomeres 2 and 3 shortest, antennomere 3 similar in length and shape to antennomere 2, antennomere 4 longest, 1.2 × as long as antennomeres 2 and 3 combined; antennomeres 5-10 gradually shortened, shorter than 4; antennomere 11 slightly longer than 10, pointed.

Pronotum approximately twice as wide as long, with rounded lateral margins; disc sparsely covered with punctures, with a lateral pair of shallow impressions.

Scutellum triangular, with rounded apex, smooth, impunctate.

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

Metasternum twice as long as mesosternum; prothoracic legs shortest, mesothoracic legs slightly longer, metathoracic legs longest.

Ventral surface of abdomen with 5 segments, segment 1 longest, segments 2-4 gradually shortened, apical segment slightly longer than segment 3, three lobes.

Aedeagus slender, parallel-sided, basally widened, apex rounded. In lateral view strongly bent.

Female. Length 8.0-8.2 mm, width 5.0-5.4 mm.

Antennae antennomeres 1-3 thin, shiny; antennomeres 4-11 with short hairs, antennomeres 7-11 wide and flat, each approximately 1.2 × as wide as long; apical sternite flatted.

Differential diagnosis.

This species can be distinguished from other species by wide and flat antennae and the shallow impressions of the pronotum.

Distribution.

China: Yunnan; Kashmir, Myanmar, India, Nepal, Bhutan, Bangladesh, Pakistan.

Figures

Figure 9. Sphenoraia (Sphenoraioides) rutilans A-C habitus D-F aedeagus A, D dorsal views B, E ventral views C, F lateral views. Scale bars: 1 mm (A-C); 0.5 mm (D-F).