304 Report of the Entomologists of the 



ing data as to tho length of time during which the moths are 

 issuing, tho percentage of males and females and the percentage 

 parasitized. As will be observed the moths issued from these 

 cocoons from Juno 2G to July 8. The data in tho following table- 

 was obtained from 2,500 of the cocoons.^'-* 



Emergence of Moths from Cocoons of Forest Tent-Caterpilla'^c. 



Dates. Males Females 



June 2() 3 14 



June 27 10 10 



June 28 10 2 



June 29 42 11 



June :W 31 5 



Julv ] 73 67 



July 3 342 284 



July 4 75 84 



July 5 132 132 



July 6 64 98 



July 8 12 25 



794 672 



Total males and females 1,466 



Number of cocoons parasitized 312 



Number cocoons unhatched 722 



These figures show that a little over 40 per ct. of the 2,500 

 cocoons failed to produce moths. Also that less than 47 per ct. 

 of those that hatched were females and that the greatest number 

 of moths escaped during the first five days of July. A little over 

 12^ per ct. Avere parasitized and more than 28 per ct. produced 

 neither moths nor parasites. 



The moths are active, restless insects. They fly only at dusk 

 and during the night. The females are ready to lay eggs soon 



19 Cocoons to the number of 3,757 were sent in from various sections of the 

 State. Nearly 1,000 of them had hatched before being gathered, leaving about 

 2,700 unhatched. For most of these cocoons the writer is indebted to Mr. A. 

 R. Eastman, Waterville N. Y., Mr. D. H. Burrell, Jr., Little Falls, N. Y., Mr. 

 J. B. Tuckerman, Cassville, N. Y., and Mr. J. M. Budlong, West Schuyler, 

 N. Y. 



