EXPERIMENT STATION BULLETINS. 



291 



THE TENT CATERPILLAR {Clisiocampa americana Harr.). 



s*'^5*Vv,t-'t^'m, 



The tent in the crotch of some 

 limb, with the caterpillar inhabit- 

 ing it, is too well known to need 

 much description. The thick, 

 closely woven web, so common in 

 May and June, protects the cater- 

 pillars from their foes, except at 

 regular intervals when they leave 

 their tent long enough to feed on 

 the leaves outside, until they reach 

 maturity. If the trees are neg- 

 lected, large portions are entirely 



^ig. 12.— Tent Caterpillar; a and b, caterpillars; c and 

 e, egg clnstere; d, cocoon. 



Fig. 13.— Tent Caterpillar moth. 



stripped of leaves by these tent 

 dwellers. When about an inch 

 and three fourths long, the cater- 

 pillars leave the tent and scatter 

 in all directions for suitable places 

 to transform to the imago, which 

 is a handsome reddish-brown moth (Fig. 13). This moth in early autumn 

 lays a cluster of two hundred or three hundred eggs in a circle around 

 a twig and covers them with a glue-like secretion that protects them until 

 they hatch the following spring. 



Remedies. — Cut out and burn in a little kerosene or else crush them 

 while in the tree. They may also be killed with the arsenites if thought 

 best to spray the trees for them. In spraying for the canker worms, the 

 tent caterpillar will be poisoned by the same application. When the egg 

 clusters are found, they should always be destroyed. 



BUD MOTHS. 



Fig. 14— Apple Tree End Moth, Tmeto- 

 cera ocellana; a, moth; b, larva; 

 c, pupa. 



Early in the spring minute caterpillars 

 often appear in large numbers to feed on the 

 buds as they are unfolding. One small 

 caterpillar can do a great deal of injury 

 to the leaves at this time, if it does not 

 entirely destroy them while still in the bnd. 

 Spraying with the arsenites at the same 

 time that spraying is done for the canker 

 worms and a little before the time of the 

 codlin moth, will be the best protection. 



