THE LESSER PEACH BORER. 43 



of larva which reach full fvrowth and begin to pupate and emerore as 

 moths in the late summer and early fall. In turn these early fall 

 adults oviposit, producing a mixed generation of larvae throughout 

 the fall of the year; these pass the winter and mature the following 

 spring. Hence two cycles of this insect are clearly indicated during a 

 calendar year in the latitude of Georgia. A clearer conception of 

 the probable occurrence of these two generations may be obtained 

 by consulting Table IT. 



Table II. — Gciicnitinns of the IcN.srr ixnrh horcr at Miirtlr. (in.. J!)().')-6. 



Generation No.' Larvpe. I , Pupa. 



1. Winter Sept. 10-May 1 Mar. 1-May 20 ( Apr. ) . Apr. l-.Tune 20 (May) 



Summer.... Apr. 10-Aug. 1 (May ! July20-Oct. l.T(Sept.) 



Moths out. 



Aug. l.i-Nov.20(Sept. 



and June'). \ j and Oct.). 



Approximate 

 length of cycle. 



7^ months. 

 4i months. 



In Georgia, in 1006, the first pupa of what may be called the winter 

 generation was found on February '27, and by the middle of March 

 they were common. A month later, in April, the adults of that gen- 

 eration were common, continuing so throughout May and part of 

 June. By the latter part of May the pupa? became scarce, showing 

 that by this date the winter generation was practically over. From 

 that date on we conclude that the larvie then present in the trees were 

 practically all of the next, or summer, generation. By the last week 

 in July pupae were again found in numbers, and continued to increase 

 well into September, when adults of the summer generation were ob- 

 served ovipositing. The winter generation, therefore, became estab- 

 lished mainly in the latter part of August and during the whole of 

 September, and the larva^ from eggs deposited then had ample time to 

 obtain at least two months' steady growth before being disturbed by 

 cold weather. The foregoing statement is based on series of speci- 

 mens collected Aveekly throughout the entire season of 190(). from 

 February to November, at Myrtle, Ga., by Mr. A. H. Rosenfeld and 

 the author, combined with records obtained by Mr. James H. Beattie 

 during the investigations in 1905 at Fort Valley, Ga. 



Observations made in the vicinity of Odenton, Md., and Washing- 

 ton, D. C., show that the pupae were present in the spring as early 

 as the first week in April and that adults issued from these during 

 the first half of ^lay. The pupa* continued present as late as May 8, 

 but thereafter we have no records. Mr. Fred Johnson, of this Bu- 

 reau, records seeing adults at North East, Pa., on May 29; and at 

 Niagara, Canada, June 23, 1905, Mr. Quaintance found larva? nearly 

 or quite full grown, and pupae and adults were present. Bailey 

 (1879) found the moths as early as May 25, in 1879, at Buli'alo. N. Y., 

 and made a general statement to the effect that they issue during 

 June and July. Kellicott (1881) reports the same months for New 

 York and Smith (1900) for New Jersey, and similar statements 



