16 



BULLETIN 1453, U. S. DEPARTMENT OF AGRICULTURE 



Further oviposition experiments, in which lean ham was used as 

 food for adults and larvae, are given in Table 4. The temperatures 



affecting them are given in Table 5. 



Table 4. — Oviposition of Piophila casei on Jean ham at Washington, D. C, 



in 1922 



Date 



Date 



Day after mating and number of eggs laid 



Total 



Lon- 



cevitv 



emerged mated 



1st 



2d 



3d 4th 



5th 



6th 



7th 



8th 



9th 



10th 



11th 



12th 



1 

 13th j 14th 



eggs of 

 female 



Aug. 28.. Aug. 28.. 

 28 28^_ 





 

 



52 

 65 

 111 























52 



Days 

 5 



66 75 

 2 















"* 







206 



6 



28— 



28- 





















113 







172 



106 



6 



28- 



28- 





















2 



28 



28- 

 28.- 

 28.. 

 28.. 

 28— 







97 



56 



19 



















6 



28— 







106 

















j 





28- 



130 





 93 



5 

 



















:::::""" 



135 

 359 





28 







140 



89 







37 











i 



Q 



28 











i 



2 

 45 j 5 

 40 3 

 138 3 

 145 5 



28— 



28.. 

 29„ 

 29.. 

 29.. 

 29.. 

 29.. 

 29.. 

 29- 

 29.. 

 29.. 

 29_. 

 30- 

 30.. 

 30- 

 30- 







40 



75 











67 























82 



70 



79 







45 























29- 























29- 



63 



145 

 78 



























29- 

























29— 



27 























105 



67 

 64 



82 



5 



29- 























7 



29- 



13 

 10 

 45 

 70 

 32 

 46 

 72 

 87 



51 

 72 

 67 

























5 



29- 

























3 



29 



21 























133 



152 



111 



128 



216 



172 







73 



209 



81 



61 



50 







111 



52 



108 



54 



30 



80 



141 



114 



133 



287 



368 



280 



357 



375 



277 



480 



200 







141 



128 



151 



354 



280 



425 



201 



268 



273 



92 



78 



282 



146 



225 



79 



333 



202 



7 



29— 



62 







20 





















29.. 



79 





















5 



30— 

























5 



30 



48 

 6 



















26 













12 



30-. 















30- 























1 



30-- 



30_. 

 31_. 



31.- 

 31.- 

 31.. 

 31.. 



38 

 55 

 81 



35 

























3 



31 







7? 



82 























6 



31 

























3 



31 



39 

 



22 

 50 



























4 



3] 



























4 



31 































2 



*4ept. 4- 

 4 - 



Sept. 4.. 



4_. 



4_. 



4.. 



4.. 



4_. 



4_. 



4„ 

 27-. 

 27- 

 27.. 

 27- 

 27- 

 27- 

 27- 

 27 





 5? 



86 p 25 

























3 















__ 











4 



4- 



70 



54 

 



38 





























4 . 



























3 



4 



SO 



























4 



4 



1 80 

 110 o 





























3 



4 



31 

























4 



4 



27 

 

 

 



87 

 63 

 75 

 147 



























3 



27 



70 





 

 

 

 

 

 

 21 

























6 



27 









 109 

 95 

 89 





 73 



5 





 

 

 

 

 

 

 



66 







o 

 o 





 

 

 





 

 

 

 

 

 

 8 







.73 











74 



89 











117 

 96 





 40 

 60 





 90 









 

 43 

 73 

 4 

 55 

 92 

 65 



29 

 52 

 

 

 61 

 

 83 

 13 









12 



27 









12 



27.. 



27-. 

 27 



57 

 97 

 | 87 

 ; 89 

 89 

 I 88 



29 

 



42 



52 





17 

 18 

 17 



27- 



27 





 53 







44 



19 



12 



27 27 







11 



27 L 



27 i 



27 









10 



27 





 

 151 

 90 101 

 159 

 117 

 o 



110 

 







o 



27 



72 





 



4 

 56 















11 



27L 27. 























9 



27i- 27- 



















3 



27 i - 27 





 78 

 

 

 

 



73 

 

 





 

 



24 



43 



31 



87 















38 



28 













9 



27 L 27. _ 













6 



27 i. 27 . 



127 

 36 

 12 



57 







48 











73 







47 







77 

 

 

 











12 



27L 27. 











30 





 









12 



Oct. 4.. Oct. 4- 



4..; 4.. 



4.. 4 



81 

 70 

 92 

 16 



63 

 86 



53 









 





 



12 



~~66" 



16 

 22 



6 



4.. 



4_. 

 4.. 

 4„ 



4._ 

 4.. 

 4.. 

 4.. 

 4_. 

 4-. 



62 



























5 



4.. 



79 63 



31 



48 















61 















10 



4.. 



74 

 54 

 

 39 

 89 

 74 

 49 



72 



83 

 79 



89 

 58 

 71 

 72 















6 



4 







49 











39 

















12 



4 

















•-> 



4.. 

 4 





 







55 



86 







47 























72 





17 

 13 



4 























145 



121 



6 



4__ 

























6 



In incubator at 80 to 85° F. 



