Phaedon brassicae Baly, 1874

Phaedon brassicae Baly, 1874 ( Fig.7 View Fig )

Phaedon brassicae Baly, 1874: 174 .

Phaedon incertum Baly, 1874: 175 .

Phaedon baolacensis Achard, 1926: 139 .

Description. Body length 3.4–3.9 mm, width 2.2–2.5 mm. Body elongate, rather convex, hind wings present. Colour. Dorsum metallic blue, purple or black, sometimes dark aerugo; underside of body, legs black or dark blue, last segment of abdomen yellowish brown; antennae black, basal two segments of antennae reddish brown.

Head. Frons and vertex with very coarse and dense punctures. Antennae shown as Figs 7A, 7B View Fig .

Thorax and abdomen. Pronotum length 0.65 mm, width 1.75 mm; disc with dense and coarse punctures, with one longitudinal impunctate stripe in medal line. Scutellum subtriangular, impunctate. Elytra length 3.0 mm; elytra striae regular, ninth stria closed to lateral margin, tenth situated lateral margin, shagreened; interspace with very fine and sparse punctures, sometimes impunctate; epipleuron with dense punctures. Underside. Prosternal process narrow, slightly widened apically. Hypomeron, mesoventriate, metaventrate and abdomen with dense and coarse punctures. Antero-lateral plate of metaventrite large and impunctate.

Aedeagus. Shown as Figs 7C, 7D View Fig .

Spermatheca. Shown as Fig. 7E View Fig .

Material examined. Holotype, male, China, coll. Baly (BMNH). Other materials: 1 male, Yunnan, Jingjiang , 31 March 1919, coll. unknown ( IZCAS) ; 1 male and 3 females, Zhejiang, Mt. Tianmu , 21 September 1953, coll. unknown ( IZCAS) ; 1 female, Zhejiang, Zhoushan, Dinghai , 24 April 1991, coll. unknown ( IZCAS) ; 2 males, Zhejiang, Qingyuan, Baishanzu (elev. 1 300 m), 19 April 1994, coll. Hong Wu ( IZCAS) ; 1 female, Fujian, Longqishan , 21 May 1991, coll. Hong Liu ( IZCAS) ; 1 male, Fujian, Jianyang, Huangkeng (elev. 270 m), 11 April 1960, coll. Yi-Ran Zhang ( IZCAS) ; 1 female, Guangxi, Guilin , 12 October 1932, coll. unknown ( IZCAS) ; 1 female, Guangxi, Longzhou (elev. 800m), 26 March 1998, coll. Chun-Sheng Wu ( IZCAS) ; 1 male, 1 female, Guangxi, Daxin (elev. 280 m), 30 March 1998, coll. Chun-Sheng Wu ( IZCAS) ; 1 male, Guangxi, Jingxi (elev. 840 m), 1 April 1998, coll. unknown ( IZCAS) ; 1 female, Yunnan, Wenquan , 26 April 1982, coll. Chun-Mei Huang ( IZCAS) ; 2 males, 3 females, China, W. Henan, Quanbaoshan, Xiangershan ( 39°07'N, 111°25'E; elev. 1 600–2 000 m), 23–24 May 2010, coll. Jaroslov Turna ( MDC) GoogleMaps ; 1 male, 1 female, China, Shaanxi, bank tributary of Wei He riv., 7 km E Zhouzhi auto-route km 100 ( 106.17°E, 34.09°N; elev. 400m), 24 August 1975, coll. Wrase ( MDC) GoogleMaps ; 1 male and 2 females, China, Yunnan, Dali Bai Nat. Aut. Pref. 4 km E Dali old town, shore terrain of Er Hai Lake, Young willows with knotgrass under vegetation in roots ( 25°42'N, 100°01'5"E; elev. 2 020 m), 27 August–21 October 2003, coll. Wrase ( MDC) GoogleMaps .

Remarks. The species is similar to Phaedon alticola Chen , but it can be distinguished by the following characters: dorsum with same colour; head with dense punctures; interspace of elytra with very fine and sparse punctures, sometimes impunctate. The ninth stria of elytra is closed to lateral margin.

Distribution. China ( Anhui, Jiangsu, Zhejiang, Hubei, Hunan, Fujian, Taiwan, Guangxi, Sichuan, Guizhou, Yunnan), Japan, Vietnam.

Host plant. Brassica sp. , Pekinensis sp., Rupr sp. or Ruppia , Raphanus sp. , Capsella sp. , Allium sp. , Beta sp. , Lactuca sp.

© Zoological Systematics, 40(1): 1–30

© Zoological Systematics, 40(1): 1–30