The Currant Fruit Fly. 



211 



In the season of 1915, a daily record was kept of the number 

 of trypetids which were captured in shady locaHties of a com- 

 mercial currant and gooseberry garden. After mating com- 

 menced in the field, data was taken on the number of male and 

 female flies caught during the morning and afternoon and also 

 on the number taken in copula. Our records are not complete, 

 however, as we were unable to visit the garden on some morn- 

 ings, as indicated by a vacant space in the column of figures in 

 table 18. An asterisk (*) in a space indicates that no specimens 

 were captured due to heavy rains and an asterisk preceding a 

 figure, that collecting was discontinued on account of rain. 



TABLE 18. 



Male and Female Currant Fruit Flies Captured in Shady 

 Localities and Number Mating. 





Date 







A.M. 



P.M. 



A.M. 



P.M. 



Mating: Mating 



Total 







d 



5 



cT 



d" 



? 



? 



A. M. 1 P. M. 







May 23 



1 



3 















4 





24 



*0 



*4 















*4 





25 



3 



8 















11 





26 



* 



* 















* 





27 







1 















1 





30 



9 



9 















18 





31 



22 



32 















54 





June 2 



19 



16 















35 





3 



12 



13 















25 





4 



12 



20 















32 





5 



35 



25 















60 





6 



16 



8 















24 





7 







♦ 



87 



♦ 



47 



* ■ 6 



140 





8 







*20 



38 



*12 



44 



*8 1 8 



*130 





9 







47 



43 



21 



27 



8 1 8 



154 





10 







* 



3 



* 



11 



* 6 



20 





11 







4 



*26 



7 



*106 



*24 



*167 





12 







* 



56 



* 



63 



* 22 



141 





13 









24 





58 



2 



84 





14 









28 





63 



! 14 



105 





15 







13 



*0 



13 



*1 



4 1 



*31 



' 



16 







64 



34 



24' 



55 



4 18 



199 





17 







* 



*3 



* 



*14 



* 1 *o 



*17 





18 







* 



23 



* 



39 



* : 12 



74 





19 









22 





58 



1 8 



88 





20 







* 



* 



* 



* 



* * 







21 







44 



25 



16 



27 



4 18 



134 





22 







43 



18 



9 



30 



14 1 4 



118 





23 







* 







* 



1 



* 1 



1 





24 















1 







1 





25 







11 



32 



11 



34 



i 



88 





26 







27 



11 



3 



9 



4 16 



70 





28 







15 



7 



10 



12 



1 6 



50 





29 







12 



11 



2 



13 



2 2 



42 





30 







11 



2 



3 



4 



4 ! 



24 





July 1 







* 



■M- 



* 



* 









2 









*1 





*2 



1 *4 



*7 





4 















1 







1 





6 







2 



4 







3 



1 2 



11 





7 



















4 



4 





8 







« 



« 



* 



■» 



« * 



* 





9 







« 



« 



* 



» 



* * 



* 





10 







2 



















2 







129 



139 



315 



498 



131 



723 



56 1 180 



2171 



