ISTeW YoKK Af;KK'ULTURAL Ex IM:inM7:Xl- S'JATIOX. 





albanyQ' 



/-sSiuyvesam 



DISTRIBUTION. 



The pear thrips occurs in the region about San Francisco Bay, 

 California. It has also been reported by BagnalP to occur in 

 England. This bulletin calls attention to the discovery of this 

 pest in 'New York, which it is of interest to note is the only region 

 in the United States outside of the heretofore recognized area of 

 infestation where the thrips is known to exist. 



The actual range of distribution of this 

 insect in this State has not been ascertained. 

 Its destructiveness to pear orchards has 

 attracted the attention generally of pear 

 growers about North Gemiantown, Ger- 

 mantown and Cheviot. Scattering niun- 

 bers of the insect have been observed on 

 pears grown south of this region, alx)ut 

 Tivoli, to the north about Stuyvesant, and 

 eastward to a line running between 

 Chatham, Glencoe Mills and Cleiinont. 

 Some growers who have read descriptions 

 of the work of this insect sitate that it also 

 occurs across the Hudson River in orchards 

 about Milton -and Marlboro. It is not im- 

 probable that the thrips occurs over a larger 

 area in this valley than is indicated by 

 these bounds. Fig. 4. 



On April 26 specimens of thrips were 

 found at Geneva in apple buds, which 

 plainly showed evidences of injury. While the season was too iat 

 advanced to find adults, many pear orchards were examined dur- 

 ing May and June in Oswego, Wa^Tie, Monroe, Orleans, Niagara 

 and Erie counties for evidences of the thrips' work on blossom 

 clusters and leaves, but without success. Its distribution in the 

 State is a matter for future inquiry. 



OGlencO Mills 

 -)N Germaniown 

 jGennantown 

 ocienmom 

 "Cnevioi 

 -'Tivoii 



'Q PougnxeepsI* 



Fig. 4. — Known Distri- 

 bution OF Pear Thrips 

 in the Hudson Valley. 



iJour. Ecoti. Biol 4: 37. 



