5& REPORT OF THE STATE ENTOMOLOGIST 1 92 1 



to H. vaginicola, it will be seen that the insect was more 

 abundant during 1918 and 1919 than was the case in 1920 and 1921. 



Harmolita vaginicola infestation; summary by counties 



County jqi8 iqiq 192c 1021 



Albany 



Cayuga . . . . 

 Chautauqua . 



Clinton 



Columbia . . . 

 Dutchess . . . 



Erie 



Genesee .... 

 Livingston . . 

 Monroe. . . . 

 Niagara .... 

 Onondaga. . 

 Ontario. . . . 



Orange 



Orleans 



Oswego 



Rensselaer . . 



Schuyler 



Seneca 



Tompkins. . 



Ulster 



Wayne 



Wyoming. .. 

 Yates 



% 



% 



% 



% 





.14 . ■ 





2.13 



4 









4 





.66 . 

 • 33 







2.7S 



• 17 . 





10 



1. 71 .. 









I. 91 •• 





.20 





.26 



.23 



.16 





2.21 



•30 . 







.81 . . 







1 









4-89 



'^67 

 I 



.12 . 





2 



133 .- 

 ■ SO . . 



. 10 . 



*33 





.17 



.21 



.24 



10.66 



1. 91 . . 









.31 







Rotation of crops is considered one of the most effective checks 

 upon both joint worms and is particularly advised in sections where 

 data indicate that they are becoming somewhat abundant. Care 

 should be taken in badly infested areas not to sow wheat close to 

 fields in grain the preceding year; otherwise there may be consid- 

 erable infestation as a result of migration. Both of these species 

 winter in the stubble, consequently burning over the fields in fall 

 or early spring is advisable so far as checking these insects is 

 concerned. 



CONFUSED FLOUR BEETLE 

 Tribolium confusum Duv. 



This is one of the commonest pests of cereals and the numerous 

 cereal preparations, it having been recorded in addition as occurring 

 in such varied materials as ginger, cayenne pepper, baking powder, 

 orris root, snuff, slippery elm, peanuts, beans and various seeds. 

 More recently it has been reported as a museum pest. 1 



There was in the spring of 1918, a call for information respect- 

 ing the breeding possibilities of this species and in order to obtain 

 some information along this line a series of breeding jars were 

 started. These were simply four ounce glass, jars in which were 

 placed a few beetles together with a level teaspoon ful of flour, the 



1 Ent. News, 27 : 234, 1916. 



