Pieris extensa Poujade, 1888

Pieris erutae var. extensa Poujade, 1888; Bull. Soc. Ent. Fr. (6) 8: xix; TL: "Moupin, China" [Baoxing County, Sichuan] (original description)

Description.

Extremely large in size, especially summer form males (Fig. 13E) (females with a relatively smaller size of males). Both wings white on the upperside while a creamy yellow hue on the underside. Male (Fig. 13E): apical spot blackish and sickle shaped. The 1st discal spot distinct and divided in the middle part, the 2nd discal spot rather faintly developed on the upperside while distinct on the underside. All veins rather narrowly blackish powdered, except vein M3 and Rs strongly powdered. The outer spot strongly developed and merging with the blackish powdered vein Rs, thus reaches the outer margin on the upperside while rather faintly developed on the underside. Female (Fig. 13F): resembles male but all dark patterns brownish and the 2nd discal spot more developed; outer margin of hindwings rather strongly brownish powdered along veins, with a suffusion faintly developed as an outer margin band on the upperside.

Distribution.

South China (Zhejiang, Sichuan, Shaanxi, Yunnan)

Phenology.

Bivoltine, from May to July.

Male genitalia.

(Fig. 5P) tegumen extremely broad with its median part slightly concave, the distal margin of tegumen without distinct convex; basal margin of the uncus as wide as the distal margin of tegumen; uncus broad with its apical gradually tapering to a obtusely point.

Female genitalia.

(Fig. 8B) posterior apophysis slender, extended reach the 8th tergum; inner distal of sterigma spindle shaped extend to center; inner basal of sterigma plate protrusion extend to the center, smoothly connected at the basal margin; signum cordiform shaped, with extremely broad transparent central axle.