56 



REPORT OF THE STATE ENTOMOLOGIST lt)21 



Percentage of wheat tillers infested wth Harmolita (joint-worm) galls 



1919 



COUNTY 



Cayuga. . . 

 Cortland. . 



Erie 



Genesee . . . 

 Jefferson . . 

 Livingston 

 Monroe . . . 

 Niagara . . . 

 Onondaga . 

 Ontario . . . 

 Orleans . . . 

 Oswego . . . 

 Schuyler . . 

 Tompkins . 



Wayne 



Wyoming . 

 Yates 



No. 



fields 



amined 



HARMOLITA TRITICI 



Max. 



Min. 



42 



2 



1. 18 





2 





56 



2 



65.60 



1 



36.80 



• 45 



24 



2 



33.71 



2 



46 



2 



48.80 



2 



10 



2.0 



20 



6 



4 



2 



36.67 



1.60 



16 



1 



34 



1. os 



Aver. 



11.82 



.24 



• 25 



9-52 



9 50 

 9.24 

 3-97 

 8.07 



13.71 



15.29 

 2-33 

 8.67 

 2 



11.42 

 2.68 



10.59 



HARMOLITA VAGINICOLA 



Max. 



22 

 11.20 



26" " 

 3-37 



16 

 3-03 



2.67 



4 



54 



Min. 



74 



1. 14 

 .80 

 .80 



1-43 



1. 16 

 2 



Aver. 



.14 



2.75 

 i-7i 



1.91 

 .26 



2.21 

 .81 



ALL 

 HAR- 

 MOLITA S 



Aver, 

 per cent 



11.96 



.24 



300 



11.23 



xi *is 



9S0 

 6.18 

 9.51 



13-71 



15.96 

 3-33 



10.00 

 2.50 



11.59 

 4-59 



IO.90 



It will be noted by referring to the above tabulation that the 

 heaviest infestations, as in the case of the Hessian fly and wheat 

 midge, occur in the important wheat-producing counties, namely 

 Genesee, Livingston, Monroe, Niagara, Ontario, Orleans and 

 Wayne. The same condition is shown in a general way at least in 

 the tabulation for 1920, given below and also in the data secured 

 the past season. 



Percentage of wheat tillers infested with Harmolita (joint-worm) galls 



1920 



COUNTY 



No. 



fields 

 ex- 

 amined 



HARMOLITA TRITICI 



HARMOLITA VAGINICOLA 



ALL 



HAR- 



MOLITAS 





Max. 



Min. 



Aver. 



Max. 



Min. 



Aver. 



Aver, 

 per cent 



Albany 



13 



3 



12 



2 



8 

 8 

 30 

 11 

 25 

 14 

 9 

 26 



29 

 6 

 8 

 2 



IS 



16.77 

 2.60 



1-33 



4 



1-33 

 35 



8.80 

 1733 

 15.20 



7.23 

 29 33 



14.67 



22.40 



2.67 



12.31 





139 



.87 



".66 

 I.42 

 33 

 332 

 3-42 

 389 

 1.94 

 1.63 

 5.80 



3-23 



8.27 

 1.33 

 3.18 



1-33 

 2.67 

 I.33 



2.67 

 2. II 



2.67 

 ".'80 



308 





"!o6 



• 33 



• 17 



.23 

 30 



.12 

 . 10 

 .21 



I.39 



Cayuga 



.87 



Chautauqua 







1.33 





2 



Erie 



.50 





3.32 



Livingston 



3-42 

 4.12 



Niagara 



2.24 





1.63 



Ontario 



5.80 



Orleans 



3.31 



Rensselaer 



8.30 





1-33 



Wayne 



3.31 









