Graphium (Pazala) sichuanica

Graphium (Pazala) sichuanica (Koiwaya, 1993)

(Figure 14, A–C)

Pazala sichuanica Koiwaya, 1993; Stud. Chinese Butt., 2: 77, f. 126–127, 132–133; TL: “Dujiang Yan, Sichuan ” [= Dujiangyan, W. Sichuan, China]

Diagnostic characters: A small species, forewing length: male 32.0–40.0 mm (mean = 35.4 ± 2.3 mm, n = 24), female 42 mm [only one female examined; 37–38 mm stated by Koiwaya (1993)]. Both wings narrower, with a yellowish tinge and well developed black markings. Forewing, the 9th black band reaches vein 2A and joins with the 8th black band with equal width (a). Hindwing, short submarginal black lines well connected to each other, almost forming straight lines (b); the discocellular veins almost free of black scales on the underside (c).

Distribution: N. to W. Sichuan, China.

Phenology: Univoltine. The type specimens in Koiwaya (1993) were collected from April to May. Our examined specimens from N. Sichuan were all collected in mid to late April.

Host plant: Unknown, presumably a plant species belonging to family Lauraceae.

Male genitalia (Figure 15): In total six male genitalia were dissected, the general characters are consistent, with slight variation in the harpes. Moderately sclerotised. Ring wavy in the upper half; saccus well developed; distance between the base of socii 0.80–0.84 mm (mean = 0.81 ± 0.02, n = 6). Valve elongate, oval in general, the dorsal terminal harpe extends obliquely outwards with produced but non-elongate tip; the dorsal subterminal harpe rather small and completely isolated; the medial harpe long and curved, the dorsal projection flat; no tooth in the middle of the medial harpe.

Female genitalia (Figure 16): Only one female was available for genitalia dissection. Lamella postvaginalis round petal-shaped; lamella antevaginalis covered with sclerotised wrinkles; ostial lobe heavily sclerotised, broad at the base and slightly curved into a sharp end in lateral view, while the posterior margin shallowly bifurcated into a pair of spurs in ventral view.