32 



BULLETIN 1453, U. S. DEPAKTMENT OF AGRICULTURE 



Tables 13 and 14 include life-history information recorded at 

 Washington, D. C, in the hot summer of 1921. The temperatures 

 are listed in Table 3. 



Table 13, 



-Results of rearing Piophila easel from eggs laid in vials on juicy 

 ham at Washington, D. C, in 1921 



Date eggs were laid 



Number 

 of eggs 



Minimum 



period, egg 



to pupa 



Maximum 



period, egg 



to pupa 



Total 

 puparia 



Minimum 



period, egg 



to adult 



Maximum 



period, egg 



to adult 



June 19 



95 

 43 

 78 

 93 

 47 

 22 

 30 

 128 

 68 

 31 

 61 

 17 

 44 

 70 

 51 

 8 

 78 

 72 

 53 

 66 

 73 

 63 

 60 

 63 

 14 

 36 

 .54 

 60 

 49 

 54 

 44 

 37 

 23 

 31 

 16 

 19 

 93 

 68 

 52 

 58 

 77 

 89 

 101 

 118 

 67 

 78 

 83 

 65 

 53 



Bays 



7 



8 



6 



7 



7 



8 



7 



6 



6 



6 



6 



7 



7 



7 



8 



8 



6 



7 



7 



7 



6 



8 



7 



8 



7 



8 



9 



8 



8 



8 



7 



8 



9 



7 



10 



9 



10 



9 



10 



. 12 



13 



14 



12 



6 



14 



15 



14 



17 



16 



Bays 

 13 

 13 



9 

 11 



7 

 11 

 17 

 10 

 12 

 11 



8 

 10 



9 

 15 

 10 



8 



9 



8 



9 



7 



11 



8 



17 



8 



9 



12 



13 



9 



9 



8 



12 



12 



8 



11 



11 



15 



23 



15 



i 151 



i 187 



» 108 



U64 



20 



i 145 



i 163 



i 145 



1161 



i 142 



93 

 13 

 72 

 65 

 11 

 16 

 25 

 33 

 68 

 31 

 54 

 16 

 44 

 68 

 40 

 2 

 69 

 72 

 33 

 60 

 71 

 50 

 56 

 59 

 14 

 31 

 30 

 56 

 41 

 54 

 40 

 34 

 20 

 31 

 11 

 15 

 87 

 31 

 52 

 45 

 41 

 72 

 83 

 28 

 51 

 76 

 73 

 48 

 30 



Bays 

 12 

 13 

 12 

 12 

 12 

 13 

 12 

 12 

 11 

 11 

 11 

 13 

 13 

 12 

 14 

 13 

 12 

 13 

 13 

 13 

 12 

 14 

 13 

 15 

 13 

 14 

 15 

 14 

 15 

 14 

 14 

 15 

 17 

 15 

 18 

 17 

 20 

 19 

 20 

 25 

 23 

 23 

 23 

 11 

 25 

 25 

 25 

 27 

 26 



Bays 



19 





19 





19 





21 





23 





29 





29 





29 





30 





30 





July 20..- 





21 





21 





22 





23 





Sept. 2 



13. 



2 



15 



2 



14 



2 



16 



2 



15 



3. . -- 



IS 



3 



17 



3 



26 



3 



15 



4 



17 



9 



20 



9 



21 



9 



10 ..... 



17 

 17 



10 



18 



10 



20 



12 



21 



12 



17 



12 



13. 



19 

 20 



16 



18 



18. 



26 

 32 

 26 



Oct. 2 - 



2 



2-.- 



i 164 

 1208 

 i 146 



2 



i 179 



3 



3 



16 

 i 163 



3 



i 178 



3 



i 163 



5 



6-.-. 



i 184 

 i 160 







1 Approximate duration of period in days. Development of these cultures, on account 

 of cool weather, was slow at first, as indicated by the minimum egg-to-pupa periods, and 

 this resulted in the food's becoming dry before the nrore backward larvae had become full 

 fed. Fresh food was provided on November 26, and on January 18 more fresh ham was 

 given to the larva? hatching from the 77 eggs laid on October 2 and to the larva? hatching 

 from the 78 eggs laid on October 3. No other attention was given except occasional brief 

 soaking in water to separate the starving larva? from the cavities in the hard meat. This 

 was necessary in order that the numbers present might be recorded. 



