282 SPHINGID^. 



5th instar. Shape as in others of the genus ; horn of medium 

 length, down-curved, tapering unevenly to a blunt point. 

 Head dull, covered with small tubercles ; body dull ; a line 

 of low tubercles along the upper edge of the subdorsal stripe ; 

 liorn covered with tubercles. Two colour-forms. Green form : 

 head bluish-green with yellow tubercles and a yellow cheek- 

 stripe. Body bluish-green, brighter green in lateral area, 

 Avith a transverse row of bright yellow spots along each 

 secondary ring ; on segments 7 to 1 1 oblique stripes of yellow 

 spots, the spots largest at the front of each segment and de- 

 creasing in size backwards, the stripes running in the opposite 

 direction to that usual in sphingid larva? ; a yellow subdorsal 

 stripe from 2 to base of horn, edged above by purple tubercles 

 on 6 to 12 ; faint purplish- brown oblique stripes on the same 

 segments. Horn green with paler tubercles ; legs red with 

 a black spot at base. Spiracles reddish-brown with a white 

 dumb-bell-shaped line down the middle. 



In the red form the green colour is replaced by bright 

 orange -red ; horn reddish. Length 95 mm. ; breadth 16 mm. ; 

 horn 13 mm. 



Pupa. — Stout, elongate-ovoid in shape, head broadly 

 rounded ; the hind margin of segment 11 deeply undercut 

 on dorsum, segments 12, 13 and 14 together forming a cone, 

 the base of which fits into 1 1 , these segments resembling those 

 oiAcosmeryx pupae ; tongue reaches tip of wing-case ; antenna 

 equal to fore leg, about half length of wing-case, mid-leg 

 two-thirds length of wing-case. Surface moderately shining, 

 thorax and abdomen slightly shagreened. Cremaster broad 

 at base, tapering gently to a C3dindrical shaft ending in two 

 teeth. Colour of head, thorax and wing-cases ochreous 

 speckled with black ; a black spot on front of head ; abdomen : 

 dorsal area rich brown, lateral and ventral areas paler brown ; 

 spiracles and cremaster black. Length 50 mm. ; breadth 

 15 mm. 



Habits. — Food-plant : Vitex Linn., family Ampelidese. The 

 moth has not been observed feeding at flowers nor coming to 

 light. 



$4 b. Ampelophaga rubiginosa harterti Roths. 



Ampelophaga harterti, Rothschild, 1894 B, p. 299 (Margherita, 

 Upper Assam) ; Hampson, 1900, p. 39. 



Imago. — <£$. Underside of body and wings much more red 

 in tint than in A. r. fasciosa. 



Hob. E. Himalayas (Khasi Hills ; Margherita, Assam). 

 We have bred the subspecies in the Khasi Hills, where it 

 is common locally at an elevation of about 4,000 to 5,000 feet. 



Larva and pupa. — Resemble very closely those of A. r. 

 fasciosa. 



