196 SPHINGID^E. 



Egg. — Very broadly ovoid ; surface smooth and shining ; 

 colour bright russet, turning whitish before hatching. Length 

 2-5 mm. ; breadth 2 mm. 



Larva : — 



1st instar. Head round, body cylindrical, horn straight 

 and very long ; surface of head and body, including horn, 

 covered with white hairs, which are far longer on the body than 

 on the head ; colour of head pale green, body yellowish-green, 

 horn reddish-purple. 2nd instar. Head triangular, with a short 

 process rising from the apex of each lobe ; horn long, slightly 

 up-curved, surface of body covered with pale tubercles ; head 



1 

 Fig. 44. — Langia zenzeroides Moore. Resting attitude. 



and body green, processes on the head black ; a dorso-lateral 

 yellow stripe from head to base of horn ; horn reddish. 

 3rd instar. Head triangular, with long apical processes ; head 

 and body apple-green, covered with white tubercles ; a yellow 

 stripe from the tip of each process on head to base of antenna 

 and also down the back of the head, meeting the dorso-lateral 

 stripe, which is now formed of yellow tubercles. 4t7i instar. 

 Shape and colour of head and body as in the 3rd instar ; 

 horn thick, ending in a blunt point directed downwards, 

 dark green with yellow tubercles. Spiracles blue. 



oih instar. Head elongate-triangular, with a long process 

 rising from the apex of each lobe, the two processes closely 



