DIPHTHEKA. 293 



b'. Fore wing- with veins 10 and 11 



stalked 20. Tathodelta, p. 336. 



e. Fore wing with veins 7, 8, 9, 10 stalked. 

 a. Hind wing with veins 3 and 4 

 from cell. 

 a 2 . Palpi not reaching vertex of head . 22. Pachylepis, p. 337. 

 b 2 . Palpi reaching far above vertex of [p. 351. 



head 28. Pseud acid alia, 



b' . Hind wing with veins 3 and 4 

 stalked ; palpi slender, oblique, and 

 hardly reaching vertex of head .... 29. Micr^schus, p. 351. 



Genus DIPHTHERA. 



Diphtera, Ochs. Eur. Schmett. iv, p. 63 (1816). 

 Canna, Wlk. Cat. xxxiii, p. 790 (1865). 



Type, D. orion, Linn., from Europe. 



Range. Nearctic and Palaearctic Regions ; Himalayas ; Naga Hills. 



Palpi obliquely porrect, the second joint clothed with long hair, 

 the third short ; antennae minutely ciliated ; thorax without a tuft 

 behind the collar ; the metathoracic tufts large ; abdomen dorsally 

 tufted. 



Larvae with tufts of hair and forming a cocoon ; 4 pairs of 

 abdominal prolegs. 



Sect. I. {Canna). Patagia produced to long upturned tufts; 

 abdomen with one large dorsal tuft. 



1963. Diphthera pulchripicta, Wlk. Cat. xxxiii, p. 790; Moore, 

 P. Z. S. 1867, pi. 6, fig. 10 ; C. $ 8. no. 1820. 



Head and collar brilliant malachite-green ; thorax ochreous, with 

 the patagia and metathoracic tufts chestnut; abdomen ochreous 

 white, the dorsal tuft pale. Fore wing malachite- green ; a 

 subbasal chestnut line conjoined to a fascia along inner margin as 

 far as the obliquely angled medial band, these chestnut markings 



Fig. 160. — Diphthera pulchripicta, J . \. 



being bordered by white lines ; a darker shade from apex to angle 

 of medial band ; a marginal chestnut band whitish towards apex 

 and indented at centre and outer angle. Hind wing ochreous 

 white, with some fuscous submarginal suffusion towards apex. 

 Hab. Sikhim. Exp. 36 millim. 



