10 



BULLETIN 964, U. S. DEPARTMENT OF AGRICULTURE. 



Tables I, II, and III were prepared after a close examination of 

 the most seriously infested host plants collected from the fields in 

 which outbreaks occured, and show that alfalfa is most frequented 

 by Halticus citri for egg laying. 



Table I. — Infestation in alfalfa by Halticus citri, showing the number of eggs in each 



leaf and vjhere deposited. 



Leaf No. 



Eggs 

 deposited 

 in upper 

 surface. 



Eggs 

 deposited 

 in lower 

 surface. 



Total 



number 



of eggs 



deposited. 



Leaf No. 



Eggs 

 deposited 

 in upper 

 surface. 



Eggs 

 deposited 

 in lower 

 surface. 



Total 



number 



of eggs 



deposited. 



1 



3 



1 





 7 

 1 



4 



11 



19 

 6 

 3 

 2 

 7 

 3 



15 

 4 

 5 

 1 



29 

 4 



15 

 

 1 

 7 



11 

 2 



14 

 4 

 1 

 7 

 9 

 1 



27 



3 

 2 

 3 



16 



30 



53 



10 



31 



6 



23 



15 



23 



2 



3 



I 

 2 

 3 

 5 

 3 





 

 

 2 

 

 

 7 

 

 

 



1 



15 

 

 

 



1 





 

 

 

 1 



3 

 2 

 3 



18 



30 



53 



17 



31 



6 



23 



16 



38 



2 



3 



5 



3 



2 



3 



5 



3 



8 



2 



21 



9 



2 



11 



12 



28 



3 



29 



4 



30 





2 1 i ' 



1 ! 1 



31 



G . . 



32. 



7 



7 

 3 



15 

 4 

 5 

 1 



28 

 4 

 5 

 

 1 

 2 



10 

 2 



12 

 2 

 1 

 6 

 8 

 1 





 

 

 

 

 



1 





 10 

 

 

 5 

 1 

 

 4 

 2 

 

 1 

 1 

 



33 



8 



34 



9 



35 



10 . . 



33. . . 



11 



37 



12 



38 



13 



39 



14 



40 



15 



41 



16 



42 



17 



43 



18 



44 



19 



45 



20 



46 



21 



47 



22 



48 



1 : 1 



20 ] 1 

 9 i 



23 



49 



24 



50 



25 



Total.. 





26 



428 1 65 



493 









Table II. — Infestation in clover by Halticus citri, showing the number of eggs in leaf and 



where deposited. 



Leaf No. 



Eggs 

 deposited 

 in upper 

 surface. 



Eggs 

 deposited 

 in lower 

 surface. 



Total 



number 



of eggs 



deposited. 



Leaf No. 



Eggs 

 deposited 

 in upper 

 surface. 



Eggs 

 deposited 

 in lower 

 surface. 



Total 



number 



of eggs 



deposited. 



1 



2 

 

 3 



ll 

 9 



14 

 2 





 10 

 1 

 4 

 

 1 

 3 

 5 

 8 

 

 2 

 4 

 1 

 6 

 

 1 

 10 

 11 





 

 1 



\ 

 

 2 

 

 

 

 

 

 

 1 

 

 

 2 



I 

 

 

 2 

 

 

 3 

 1 



2 

 

 4 



10 



12 

 9 



16 

 2 

 



10 

 1 

 4 

 

 2 

 3 

 5 



10 

 1 

 2 

 4 

 1 

 8 

 

 1 



13 



12 



27 





 1 



8 

 5 



14 

 9 

 2 



13 

 1 

 

 

 6 

 4 

 2 

 1 



10 

 

 1 

 5 

 2 

 7 

 4 

 9 

 3 





 

 6 



1 

 

 3 

 4 

 2 

 

 3 

 1 

 

 

 4 

 

 1 

 

 

 

 



1 





 2 

 





 1 



14 

 6 



14 



12 

 6 



15 

 1 

 3 

 1 

 6 



t 



1 

 11 

 

 1 

 5 

 2 

 8 

 4 

 11 

 3 



2 



3 



4 



28 



29 



30 



31 .... 



6 . -. 



32 



7 



33 



8 



34 



9 



35 



10 



33 



37 



11 



12. .. 



38 



13 



39 



14 



40 



i 15 



41 



42 ... 



16 



17 



18 



43 



44 



45 



19 



20 



46 



21 



47 



22 



48 



23 



49 



24 



50 ... 



25 



Total.. - 



26!!!!.'!!!!!! 



222 



45 



267 





