442 JOURNAL OF ECONOMIC ENTOMOLOGY [Vol. 14 



brood pupated during the latter half of July. The period spent in the 

 cocoon varied from 6 days to several weeks, but most of the specimens 

 transferred in 10 to 12 days. 



First Brood of Moths. Moths from eggs laid in the spring begin to 

 appear on June 25th, maximum July 30, last September 1st, or later. 

 Moths from the spring brood are still present at this date, so that there 

 begins an overlapping of broods that persists and becomes more pro- 

 nounced as the season advances. In fact, the overlapping may con- 

 tinue into the following season, since larvae of two or three different 

 broods may pass the winter together. 



The data given for the first observed appearance of the eggs, larvae, 

 pupae and adults, are not necessarily for the same insect, nor do they 

 represent the first actual appearance of the different stages, but only the 

 "observed" appearance. For exam,ple, the moth that emerged on June 

 25th pupated earlier than June 20th, the date of the first observed pupa- 

 tion. The maxtm.imi emergence of this brood occurred about July 30th. 

 The length of life of the moth varies from 5 to IS days, the males dying 

 much earlier than the fem.ales. 



The Second Generation 



Second Brood of Eggs. The first eggs of the second brood were seen 

 on July 3rd. During the last week of June and the first two weeks of 

 July, while occasional eggs were deposited, egg laying was at a minimum 

 during this period. Beginning the third week of July, eggs became more 

 numerous and the peak of egg laying by this brood was during the first 

 week of August. 



Second Brood Larvae. Second brood larvae began to appear early 

 in Jul}' and reached their m.aximum. numbers about the second week of 

 August. One larva which hatched on June 30, pupated on August 18, 

 which represented the shortest larval life observed, 20 days. Under 

 the heading "First Brood Larvae'' a record was given of 69 days in the 

 larval stage in summ.er and even at the end of this period, spinning 

 seemed to be induced only by disturbance. Many of the second brood 

 larvae pass the winter as such, and do not complete their development 

 until the following year. 



Second Brood Pupae and Moths. Some of the second brood 

 larvae transform to the pupa and adult, the first of which may appear 

 the last week of August and continue to appear until October . 



