REPORT OF THE STATE ENTOMOLOGIST Kjl6 II 



Shade tree insects. There has been comparatively little damage 

 to the shade trees of the State, owing to the climatic conditions being 

 unusually favorable for the growth of vegetation. 



An interesting injury, that by the maple leaf stem borer, was 

 studied at Rye. This insect is a comparatively unknown one in 

 New York State and occasionally, as shown by observations in 

 other portions of the country, becomes somewhat abundant and 

 injurious. An account of this species may be found in the body 

 of the report. 



There is annually more or less bleeding from wounded trees and 

 the past season was characterized by an unusual prevalence of this 

 trouble. While there may be other causes for this phenomenon, 

 observations of the last few years have enabled us to associate much 

 of this damage with slender, white maggots, the young of a small 

 and hitherto almost unknown fly. A general account of the insect 

 with suggestions for control may be found on the following pages. 



Forest tree pests. Injuries by the hickory bark beetle have 

 continued though the damage the past season appears to be 

 materially less and in certain cases, at least, seems to be favored by 

 a weakened condition following the severe drought of earlier years. 

 Studies of this species have resulted in securing valuable information 

 respecting the biology and habits of several associated species and 

 these latter data have been correlated and placed on record in 

 this report. 



Greenhouse pests. Several destructive greenhouse insects have 

 been brought to notice during the past year and investigated so 

 far as opportunities permitted. The Florida fern caterpillar, a 

 well-known southern insect, was found well established in a fern 

 house at Lockport, and an account of the insect with remedial 

 measures is given below. The rose gall midge, a dangerous enemy 

 of indoor roses, has again appeared in greenhouses in the lower 

 Hudson valley, while reports from different localities indicate a 

 wide, dissemination for the recently introduced chrysanthemum 

 gall midge, a species liable to appear in numbers in almost any 

 chrysanthemum house in the State. 



Periodical cicada. A brood of this remarkable insect appeared 

 in the western part of the State and detailed records concerning 

 its distribution and abundance, together with observations upon 

 its habits, have been collated and are given elsewhere in the report. 



Flies. There is continued interest in the control of the house 

 fly and the Entomologist has complied with a number of requests 

 for information in regard to this insect. Mobilization of troops 



