HOW TO CONTROL THE PEAR THRIPS. 3 



from the ground continues till early April, maximum emergence, 

 however, occurring in late Februar}^ and early March. Examina- 



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•iiirTh 



,rfd 



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Fig. 2.— The pear thrips {Euihrips pyri): Adult, greatly enlarged. (Original.) 



tion of the tables of emergence records (Tables I to V) will show the 

 dates of emergence for 1909-10: 



Table I. — Total daily emergence of thrips from all cages at laboratory, San Jose, Cal., 



1909 and 1910. 



