6 CONNECTICUT EXPERIMENT STATION BULLETIN I55. 



about a week the eggs hatch and the young larvae or grubs 

 feed upon the under surface of the leaves, eating ofiE the green 

 tissue between the veins and leaving the veins and the upper 

 epidermis, as is shown in Fig. i. 



In about three weeks the larvae or grubs are fully grown, 

 and crawl down the trunks of the trees or drop from the ends 

 of the branches to the ground and transform to the naked pupa 

 stage. The great proportion of the pupae are found close 

 around the base of the tree or lodged in the crevices of the 

 rough bark of the trunk and larger branches. Except for being 



Fig. 3. — Larvae and pupae, twice natural size. 



in crevices, they are unprotected. The writer has seen trees in 

 New Haven where it would be possible to gather several quarts 

 of these pupae at the base of a. single tree. 



The pupa stage lasts about ten days, then the adult beetles 

 appear, and lay eggs for the second generation, which seldom 

 does much harm in Connecticut. Those emerging late prob- 

 ably do not lay eggs for a second brood, but may be seen crawl- 

 ing and flying about for a time, feeding more or less, but 

 early going into winter quarters, usually in church belfries, 

 attics of houses, barns, sheds or other out-buildings. They 

 also pass the winter in cracks of fences, telephone poles, or 

 under the edges of the loose bark of the trees. In some of the 

 cities worst infested the adults sometimes gather in church bel- 

 fries in such numbers that they can be swept up by the half 



