6 CIRCULAR 349, U. S. DEPARTMENT OF AGRICTLTURE 



Table 4. — Xunibers of Anastrepha ludens adults and puparia recovered in each pit 



in the packed series 





Adults and puparia found in pits of depth specified i 



Depth (inches) 



19 inches 



22 inches 



26 inches 



27 inches 



30 inches 



34 inches 





oc 



•a 



< 



— 

 - 

 - 



-s. 



— 



< 



m 



- 

 - 

 - 



OB 



= 

 — 

 < 



03 

 P. 



= 

 - 



— 



< 



*— 

 - 

 - 



- 



— 

 < 



= 

 - 



< 



- 



1 . 





1 



10 



2 



18 

 51 



1 

 1 



2 

 13 



22 





 I 



2 



3 

 3 



14 



1 



1 





 



1 



1 



4 

 32 



1 

 1 



2 

 5 

 1 

 6 



- 

 S 



2 

 2 



1 

 3 



10 



8 





1 



1 



1 

 5 

 24 

 3 



1 

 1 

 1 

 1 



7 



4 



1 





2 - 







3 



U 



17 



6 



16 

 50 



14 

 40 



21 





4 





6 









8 - - - - 





9 





10 





11 . 





1? . 





13 





14 - 





15 -- - _ - 





16 





17 





18 - 





19 





20 



8 



3 



133 

 579 





21 





22 







23 _ 







! 



73 





24 _ - 





25 - - 









26 





27 



2 



93 

 166 





2S 



8 



2 



110 

 273 





29 





18 



2 



30 



2 



- 



31 





67 

 141 





32 



4 



27 



33 





10 



34 



148 



35 . 



: 

 l 



168 



36 



202 



37 





25 







Total 



189 



813 



46 



182 



5 



314 



45 



468 







253 



is 









i The lines between the heavy cross rules near the bottom of each column represent the 2-inch layer of 

 mangoes in the bottom of the pit, and the line just below represents the l-ineh layer of soil beneath the 

 mansoes. 



Xo emergence of adults was recorded from pits in the packed series. 

 In the unpacked series there was emergence from only two pits; 24 

 adults emerged from the 18-inch pit and 6 from the 27-inch pit. It 

 seems strange that no adults came through the soil in the pits that 

 were 22, 23, 26, and 26.5 inches, in depth, but emerged from the 

 greater depth of 27 inches. The fruit in the control pits was buried 

 6 inches but it was completely destroyed by ants. The ants, however, 

 did not disturb the fruit in the other pits. 



It will be noted that the greatest number of larvae pupated in the 

 soil surrounding the fruit at the bottom of the pits (tables 3, 4, and 5). 

 Nearly 78 percent of the larvae in the unpacked series and over 80 

 percent of those in the packed series pupated at that point. Above 

 this level the number of larvae pupating in the soil decreased rapidly, 

 only 10.2 percent having pupated in the first inch of soil above the 

 fruit in the unpacked series and 9.S percent in the packed series. At 

 the 2-inch level above the fruit 4.7 percent of the total puparia were 



