EXPERIMENT STATION BULLETINS. 



301 



of this case bearer is carefully described by Professor Comstock, in his Annual 

 Report of the Division of Entomology, in the Department of Agriculture for 

 1879. The young larva just from the egg acts as a miner, working between the 

 upper and lower surfaces of the leaves. "When full-grown, it spins inside of 

 the mine, a lining just the size that the case is to be, and after the upper and 

 lower epidermises are bound down by this lining, the larva cuts out the case 

 from the outside, making a small pocket just large enough for the larva to 

 enclose its body. From the mouth of the pocket, the head and thorax project, 

 allowing the larva to walk about while the soft body is enclosed in the pocket 



-t- 



Fig. 19. — Resplendent Shield-bearer, after Comstock.'Rep. of Entomologist for 1879, Div. of Ento- 

 mology, U. S. Dept. of Agr. 



or case made from the leaf skins. After the larva has attained its full size, 

 the case is then fastened to bark or to something permanent. The larva draws 

 its body entirely within the case and changes to a pupa, from which the adult 

 moth emerges in May to lay eggs for the next brood. The moth that is the 

 cause of all this trouble, spreads about three-sixteenths of an inch from tip to 

 tip of its extended wings. It is brilliantly colored in metallic hues and well 

 deserves the name of "resplendent." Besides apple it works on pear, thorn- 

 apple and wild cherry. 



REMEDIES. 



Professor Comstock recommends a winter wash of lime and sulphur, using 

 six pounds of sulphur to half a bushel of lime and applying as a white-wash when- 

 ever the insects become numerous enough to threaten the safety of trees. In 

 the South these insects are said to rear two broods a year. 



