NOTE ON SUANA CONCOLOR. 299 
A NOTE ON SUANA CONCOLOR (WALKER). 
By Ronatp Sentor-Wuite, F.E.S. 
(With one Plate.) 
Position.—Lepidoptera, Heterocera. Family Lasiocampide. 
Distribution.—Throughout India and Ceylon; Philippines ; 
Java (Hampson). 
Food Plants —Psidium guyava ; Cajanus indicus ; Hibiscus 
rosa-sinensis ; “ Daminiya” (Sin.) =? Grewia tiliefolia. 
Lefroy gives Shorea robusta as the food plant, whilst Beeson 
(Ag. Jo. Ind. 1918) mentions it as a definite pest of this tree. 
It probably occurs locally on other plants, but such have 
not come under my notice. It is said to occasionally attack 
tea in Ceylon. 
Occurrence.—There are in this district two broods per 
annum, maturing in February-March and _ September, 
respectively. 
Egg.—Barrel-shaped, height 2 mm., diameter 14 mm. 
Upper end brown, micropyle black, lower end all white. 
There is a brown patch on each side apparently at point of 
contact with adjacent two eggs. A few eggs are pale green, 
and not white. Eggs laid in plates around a branch strongly 
cemented together. A few eggs are found on the ground 
beneath, mixed with male anal hairs, being apparently those 
first laid. A female I had under observation laid 611 eggs 
in one night, and contained on dissection 50 more developed 
eggs. 
Larva.—The young larve on hatching make their first meal 
off the shell, and take no other food for two days. Length 
when hatched 7 mm. Head black, body ringed black and 
white, with a yellow patch on the black meta-thoracic band. 
There are long soft hairs, those from the thorax directed 
