Phaedon alticola Chen, 1974

Ge, Si-Qin, Daccordi, Mauro, Ren, Jing & Yang, Xing-Ke, 2015, Revision of Phaedon Latreille from China (Coleoptera: Chrysomelidae), Zoological Systematics 40 (1), pp. 1-30 : 5-8

Phaedon alticola Chen, 1974 ( Fig. 4 )

Phaedon alticola Chen, 1974: 45 , 48.

Description. Body length 2.5–3.5 mm, width 1.8–2.0 mm. Body elongate, rather convex, hind wings present. Colour. Head and pronotum blackish aeneous; scutellum nearly balck; elytra dart blue, violaceous or purple; underside black or pitchy black, with a metallic luster. Head. Frons and vertex with fine and sparse punctures. Antennae shown as Figs 4A, 4B .

© Zoological Systematics, 40(1): 1–30

© Zoological Systematics, 40(1): 1–30

© Zoological Systematics, 40(1): 1–30

Thorax and abdomen. Pronotum length 0.85 mm, width 1.4 mm; disc with dense and coarse punctures. Scutellum subtriangular, smooth and impunctate. Elytra length 2.9 mm; striae regular; interspace with fine and sparse punctures. Underside. Prosternal process narrow, slightly widened apically. Hypomeron, mesoventrite and metaventrite, abdomen with fine and sparse punctures. Antero-lateral plate of metaventrite large and impunctate.

Aedeagus. Shown as Figs 4C, 4D .

Spermatheca. Shown as Fig. 4E .

Material examined. Holotype male, Qinghai, Nangqian (elev. 3 700 m), 3 September 1965, coll. Shu-Yong Wang (IZCAS). Allotype female, same data as holotype ( IZCAS) . Paratypes: 4 males, 6 females, same data as holotype ( IZCAS) ; 3 males, 3 females, Tibet, Markam (elev. 2 230 m), 9 June 1961, coll. Suo-Fu Li ( IZCAS) ; 1 male, Qinghai, Yushu (elev. 3 750 m), 2 June 1965, coll. Shu-Yong Wang ( IZCAS) . Other materials: 3 males, 3 females, Sichuan, Hongyuan, Longriba (elev. 3 500–3 700 m), 24 August 1983, coll. Shu-Yong Wang ( IZCAS) ; 1 male and 2 females, Sichuan, Dege, Keluodong (elev. 3 500–4 250 m), coll. Shu-Yong Wang ( IZCAS) ; 1 male, 2 females, China, Gansu, ca. 5 km sw. Luqu / (Ioc Hua-er / Lin Ke-river ) (elev. 3 400 m), 12–13 July 1994, coll. Heize (1 male in MDC, 2 female in HKC) ; 1 female, China, E. Qinghai, pass 30 km S. of E. U. (elev. 3 600 m), 1–3 August 1992 ( MDC) ; 1 female, China, Sichuan, Östl. Zhangla (elev. 3 500 m), 27 June 1996, coll. D. Erber ( MDC) .

Remarks. The species is similar to Phaedon brassicae Baly , but it can be distinguished by the following characters: dorsal side of body not unicolorous, the punctures of vertex finer and more scattered, being much finer than those of the elytra and the ninth stria of elytra situated in the middle of the marginal space, with its basal part closer to the eighth stria than the lateral margin.

Distribution. China (Qinghai, Sichuan, Gansu, Yunnan).

Host plant. Ranunculus tricuspia , Lancea sp.

Figures

Fig. 4. Phaedon alticola Chen, 1974. A. Antenna, male. B. Antenna, female. C. Aedeagus, dorsal view. D. Aedeagus, lateral view. E. Spermatheca. Scale bars: A–B=0.5mm; C–D =0.2mm; E=0.1mm.