CYPA. 217 



it joins the discal band. Discal band from costa to inner mar- 

 gin, slightly curved, grey, narrower between lower edge of 

 cell and costa. A post-discal olive-brown oblique band, 

 curved inwards at the costa. A conspicuous but small 

 silvery-white spot at lower angle of cell. Costal margin grey, 

 more or less suffused brown. 



Hind wing smoky- brown. A darker submarginal line at R 2 

 and R 3 , about mid- way between cell and margin, sometimes 

 indistinct. A curved heavy black anal bar from anal angle 

 to M 1 . Underside similar to upperside. Fore wing with the 

 longitudinal streak black and well marked. Hind wing 

 with a similar streak between veins R 1 and R 2 , not entering 

 the cell. A pale outer border as on fore wing and a narrow 

 post-discal grey -white band divided by an indistinct blackish 

 line. 



Head, thorax, antenna and abdomen pale brown ; abdomen 

 darker below, antenna grey or greyish- white above. Expanse : 

 <$ 78-90 mm., $ 90 mm. 



Structure. — " Pilifer short. Retinaculum occasionally vesti- 

 gial, ' frenulum shortened. Clasper sole -shaped, rounded 

 apically, hairy on the inner surface ; distal part of harpe 

 forming a strongly chitinized ventral ridge, which is longi- 

 tudinal, slightly bent dorsad, granulose, with the ventral 

 surface slightly concave and the dorsal side convex. Apical 

 edge of penis-sheath bent proximad at the ri^ht and left side " 

 (Roths. & Jord., 1903, p. 296). 



Hab. Central, Eastern and Northern China ; Japan. Recently 

 discovered in the Shan States, where the larva was found as 

 a pest in plantations of a species of mulberry (see p. 35). 



Genus CYPA Walker. (Fig. 53). 



Walker (non Latr., 1802), 1864, p. 41 ; Roths. & Jord., 1903, 

 p. 297 ; id., 1907, p. 60. 



Genotype : decolor Walk. 



Imago. — "* $$. Tongue very short and weak, fringe long, 

 upper surface with tubercles. Pilifer short, with a large 

 brush of scales ; genal process short, broad. Head small, 

 crested ; eye small, lashed. Palpus closely appressed to 



A, C. decolor decolor (Walk.); B, 10th tergite, dorsal view; C, 10th 

 tergite, lateral and ventral view ; D, clasper and harpe ; E, penis- 

 sheath ; F, $ genitalia. Gr, C. pollens enodis Jord., 10th tergite, 

 lateral and ventral views ; H, clasper and harpe ; I, end of clasper ; 

 J, penis-sheath ; K, ?, genitalia, x. t, anal tergite ; x. st, anal 

 sternite ; An, anus ; ap, proximal process ; or, arch ; dp, dorsal 

 process ; Is, tubercle ; mr, anterior ridge ; us, tubercle ; va, vaginal 

 orifice. 



