164 Bulletin 190. 



areas ; tliej first lived in a little tube formed by tieiiig the leaf-hairs 

 together with silk near a vein or between two veins. In a few days 

 they began to I'oll the leaves. 



By the middle of August many of the caterpillars of this second 

 brood had gotten their growth in our cages ; they would have 

 doubtless grown faster in the field, for we did not keep them fully 

 sup])lied with fresh food. Some pupated on August 16th, and the 

 moths emerged nine days later. We soon obtained eggs and had 

 another brood of caterpillars feeding in September. 



Thus, there may be three broods of the caterpillars developed on 

 the plants during the growing season, in May, in Juh^, and in 

 September ; this fact makes it a much more serious and destructive 

 pest. We have not ascertained in what stage the insect passes the 

 winter, but probably not as a caterpillar ; some of its near relatives 

 hibernate in the egg stage, others as moths or pupne. 



Its enemies. — I^o natural enemies have heretofore been recorded 

 as attacking this strawberry leaf-roller. Among some of the cater- 

 pillars sent us from Westfield on June 1st was one dead specimen 

 surrounded by several small maggots feasting on its body ; we were 

 not able to determine if they were internal or external parasites. 

 Three days later the maggots had spun their cocoons near their dead 

 host. And on the 12tli and 15th of June six small, Braconid, 

 parasitic flies emerged ; their bodies and legs were of a light brown 

 color, with the head black. Mr. Ashmead determined them as his 

 Rlujssalus atnc€])s Asii. (Proc. U. S. Nat. Mus., 1SS8, }). 628), 

 which parasitizes the oblique-banded leaf- roller of the apple. 

 ( Cacmcia rosaceana). 



Remedial measures. — This strawdjerry leaf-roller is destructive 

 only in its caterpillar stage, when it lives most of the time well pro- 

 tected in its rolled, leafy home. One infested patch at Westfield 

 was sprayed about June 1st with Paris green (using 1 pound in 150 

 gallons, without lime). The leaves and forming fruits were badly 

 injured l)y the spray and we could find but few dead caterpillars a 

 few days later. Swift's arsenate of lead or Bowker's Disparene 

 would not injure the foliage. It is not advisable to spray the 

 plants between the time of opening of the blossoms and the picking 

 of the fruit. If the patch is known to bo infested, a poisonous 



