PINK 
BOLLWORM 
Picture Sheet No. 21 
x- other side for 
fe history and control) 
A, Cotton bloom fosetted by feeding of the pink bollworm. B, 
PGreen cotton with the boll sectioned: a, Eggs laid inside the calyx 
of cotton boll; b, entrance hole made by newly hatched larva 
(invisible to naked eye); c, larvae in cotton seed; d, hole in par- 
tition made by a larva traveling from one lock to another; e, exit 
holes of larvae. C, Mature larva. D, Pupa. E, Adult. F, 
Damaged open boll. A, B, F, twice actual size; D, and E, 3 l /z 
times actual size; C, 5 times actual size. 
Bureau of Entomology and Plant Quarantine, Agricultural Research Administration, U. S. Department of Agriculture 
