4 CIRCULAR 349, U. S. DEPARTMENT OF AGRICULTURE 



complete specimens or thoraees of adults were recorded. The pup aria 

 were recorded as empty, full, malformed, caudal ends, cephalic ends, 

 mid-sections, and fragments. The records of empty puparia are 

 incorporated in the data as normal puparia from which adults emerged. 

 The malformed, as well as the full puparia, are taken as those from 

 which no adults emerged. The greater number of either caudal ends 

 or raid-sections found at a given level is included in the number of 

 puparia from which adults emerged. The total number and the 

 condition in which they were foimd are shown in table 2. 



Table 2. — Summary of number and percentage of puparia from which no adult 

 Mexican fruit flies emerged 



UNPACKED SERIES 



Depth of pit (inches) 



Total i 



Normal 2 



Malformed 



Total full 3 



18 _ . 



Number 

 878 

 678 

 437 

 S71 

 381 

 928 

 380 



Nu mber 

 74 

 13 



3 

 43 





 12 



1 



Percent 

 8.43 

 1.92 



.68 

 4.94 

 

 1.29 



.26 



Number 



59 

 15 

 11 

 50 



8 

 19 



5 



Percent 

 6.72 

 2.21 

 2.52 

 5.74 

 2.09 

 2.05 

 1.31 



Number 



133 



28 



14 



93 



8 



31 



6 



Percent 

 15 15 



22 



4.13 



23- 



3.20 



26 



10 68 



26.5 - . - 



2 09 



27 -.- - 



3.34 



28 



1.58 











4,553 



146 



3.20 



167 



3.86 



313 



6 87 









PACKED SERIES 



19 



813 

 182 

 314 

 468 

 253 

 576 



37 

 1 





 1 



7 

 



4.55 

 . 55 





 .21 



2 77 



5' ' 



68 

 3 



13 



1 



20 



8.36 

 1.65 



.64 

 2.78 



.39 

 3.474 



105 

 4 

 2 

 14 

 8 

 20 



12.91 



22 - 



2.20 



26_ . 



.64 



27 .... _ 



2.99 



30 



3.16 



34 



3.47 











2,606 



46 



1.76 



107 



4.10 



153 



5.87 









« All puparia, including normal (full), empty, and malformed, and those represented by caudal ends or 

 mid-sections. 



2 Well-formed puparia from which no adults had emerged. 



3 Includes only normal and malformed puparia. 



The number of adults and puparia recovered from each pit in the 

 two series, packed and unpacked, is shown in tables 3 and 4. The 

 actual depth of burial is shown above the heavy cross rules, and the 

 space occupied by the fruit is shown between the heavy cross rules. 

 \Yhen all the soil of a pit had been removed the hard bottom was 

 brushed to remove the loose soil. After this about an inch of hard- 

 pan was removed. The bottoms of the pits examined in the rainy 

 season could not be brushed so well as the others, and the data shown 

 for the inch of hardpan probably include some of the data that should 

 be shown above it. 



