26 



PROCEEDINGS ENTOMOLOGICAL SOCIETY 



TABLE I. Summary of average development from 5-day oviposition periods. 



TABLE II. Nummary of average development from eggs laid on same day. 



Date of ovipositiou 



Developmental period from eggs deposited by 



Typical 

 grandis 



September 2 16 .5 



September 3 15 .6 



September 4 15 .0 



September 5 '. \ 18 .0 



September 6 



September 7 j 20.5 



September 8 ! 18 .0 



September 9 .' 20 .0 



September 10 



September 11 



Average . 



17.9 



Typical 

 thurberice 



16 

 18 

 17 

 19 

 16 

 16 

 17 



19 



17.2 



Male Male 



grandis \ thurberice 

 female female 



th urberice grandis 



18.5 

 18.6 



18.5 



IS 



19.5 

 19.7 



19.0 



