10 



DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 



FIRST-BROOD PTJP.E. 



First-brood larvae began to pupate May 27, just a week after the 

 last stragglers of the wintering larvae under observation had pupated. 

 Thus first-brood pupae appeared before the last of the spring brood 

 had given out moths, the extent of the overlap being 12 days. 



Of 42 first-brood pupae observed, the average duration of the stage 

 was 10.7 days, ranging from 9 to 13 days. The total period from 

 the time the larva left the fruit until the adult issued averaged 17.8 

 days, with a range of from 13 to 21 days. As before suggested, larvae 

 not confined in vials would probably pupate sooner, thus shortening 

 the " cocoon stage." Individual records of first-brood pupae are 

 shown in Table VIII. 



Table VIII. — Pupal periods and cocoon stages of first generation. 



Individual No. 



Larva 

 left 

 fruit. 



Larva 

 pupated. 



Moth 

 emerged. 



Length 



of pupal 



stage. 



Total 

 time in 

 cocoon. 



May 29 

 ...do 



...do 



May 30 



...do 



...do 



May 31 

 June 2 



...do 



...do 



June 3 



June 4 



June 5 



1 ..do..... 



..do 



June 6 



..do 



June 8 



..do 



June 9 



June 11 



June 15 



June 16 



June 21 



June 23 



..do.... 



June 24 



...do..... 



I June 27 



I June 28 



( June 30 



Julv 

 Julv 



...do. 



...do. 

 July 

 July 



...do. 

 July 

 July 



...do. 



...do. 



June 

 ...do. 

 ...do. 

 June 

 ...do. 

 June 

 June 

 June 

 June 

 June 

 June 

 June 

 June 

 June 12 

 June 21 

 June 11 

 June 13 



...do 



June 16 

 ...do..... 



...do 



June 19 

 June 23 

 June 24 

 June 29 



July 

 July 

 July 

 July 

 July 

 Julv 

 July 

 July 8 

 Julv 11 

 July 16 

 July 9 

 July 20 

 Julv 26 

 July 23 

 Julv 15 

 Julv 18 

 July 25 



June 12 



...do 



...do 



...do 



June 13 

 June 18 

 June 15 

 June 16 



...do.... 

 June 18 

 June 16 

 June 21 

 June 19 

 June 23 



j July 3 

 June 22 

 June 24 



...do 



June 26 

 June 28 

 June 25 

 June 30 

 July 5 



...do 



July 11 

 July 17 

 Julv 12 

 Julv 16 

 July 17 

 July 13 

 July 17 



..do 



July 18 

 Julv 20 

 Julv 27 

 July 18 

 Aug. 1 

 Aug. 7 

 Aug. 2 

 July 26 

 Julv 29 

 Aug. 4 



Days. 



Days. 



10 

 10. 



14 

 14 



10 



14 



9 



13 



10 



14 



13 



19 



11 



15 



11 



14 



10 



14 



11 



16 



10 



13 



12 



17 



11 



14 



11 



16 



13 



28 



11 



16 



11 



18 



11 



16 



10 



18 



12 



19 



9 



14 



11 



15 



12 



17 



11 



14 



12 



18 



10 



24 



10 



18 



11 



22 



10 



20 



10 



15 



10 



17 



12 



16 



10 



16 



9 



18 



11 



25 



9 



15 



12 



25 



12 



31 



10 



25 



11 



17 



11 



20 



10 



26 



FIRST-BROOD MOTHS. 



The earliest first-brood moth emerged June 8, on which date the 

 last belated moth of the spring brood also issued. Sixteen of the 

 earliest moths, caged June 8-15, showed an average fife of 6.2 days. 

 Oviposition began 5 days after the first moth was caged. In 1907, 



