Phaedon apterus Chen & Wang, 1984

Phaedon apterus Chen & Wang, 1984 ( Fig. 5 View Fig )

Phaedon apterus Chen & Wang, 1984: 173 , 175.

Description. Body length 3.0– 3.2 mm, width 2.0– 2.2 mm. Body elongate, rather convex, hind wings absent. Colour general colour purple, shining; antennae black.

Head. Frons and vertex with fine and sparse punctures. Antennae showing as Figs 5A, 5B View Fig .

Thorax and abdomen. Pronotum length 0.9 mm, width 1.7 mm; alutaceous, fairly closed punctuate in the middle, more strongly and very sparingly punctuate at sides. Scutellum triangular, apex rounded, smooth and impunctate. Elytra length 2.5 mm; with regular striae, interspace shargreen and impunctate. Underside. Prosternal process narrow, apex slightly widened. Hypomeron, mesoventrite and metaventrite, abdomen with fine and sparse punctures. Antero-lateral plate of metaventrite large and impunctate.

Aedeagus. Shown as Figs 5C, 5D View Fig .

Spermatheca. Shown as Fig. 5E View Fig .

Material examined. Holotype male, Sichuan, Batang, Haizishan (elev. 4 350–4 600 m), 19 August 1982, coll. ShuYong Wang ( IZCAS) . Allotype female, same data as holotype ( IZCAS) . Paratypes: 10 males and 15 females, same data as holotype ( IZCAS) ; 1 male, Yunnan, Deqin, Baimang Xueshan, East slope (elev. 4 000m), 29 August 1981, coll. Shu-Yong Wang ( IZCAS) . Other materials: 1 male, 3 female, China. N. W. Sichuan, Pass Zokm NW Rongbaca picea forest ( 31°46 ʹ N, 99°32 ʹ E; elev. 4 091 m), 20 July 1995, coll. Jaroslav Turma ( 1 male and 1 female in IZCAS; 2 female in MDC) GoogleMaps ; 2 male, 1 female, China, Sichuan, road Garze-batang , pass 25km, S. Garze (elev. 4 000–4 500 m), 8–10 July 1995, coll. Kalab ( 1 male in MDC, 1 male and 1 female in IZCAS) .

Remarks. The species is distinguished by the purple colour, the absence of hind wings and antennae black.

Distribution. China ( Sichuan, Yunnan).