92 NEW YORK STATE MUSEUM 



which w€re inadvertently missed during the spraying operations. 

 Last spring Mr Hart employed the Cordley lime-sulfur wash and 

 proposes to boil, the coming November, sufficient material for the 

 spring application of 1910. 



West Indian peach scale (Aulacaspis pentagona 

 Targ.). A small branch of Prunus pseudo-cerasus was 

 received from New Rochelle through nursery inspector T. F. Niles 

 accompanied by the statement that this scale insect had been ob- 

 served by him for some years in the vicinity of New York city. 

 The specimens examined came from a tree which had been set at 

 least three and probably five years ago, presumably being imported 

 from Japan. The portion of the limb submitted for examination 

 was very badly infested, showing that the insect had apparently 

 thrived in this climate though it was supposedly not hardy north 

 of Washington, D. C. 



Oyster scale (Lepidosaphes ulmi Linn.) . This 

 species, easily recognized by its brown, oyster shell shaped scale, 

 some ys of an inch long, continues to be abundant here and there, 

 occasioning complaint on the part of the fruit grower and frequently 

 causing serious injury to young trees. As has been previously 

 noted, it displays a marked proilificacy on poplar. This pest may best 

 be controlled by thorough sipraying with a contact insecticide at the 

 time the minute, yellowish young are crawling in numbers, namely, 

 the latter part of May or early in June. Winter applications of a 

 lime-sulfur wash have given good results in the hands of some and 

 are worthy of further trial. The later the application can be made 

 without injury to the tree, the better the prospects of satisfactory 

 results following. This wash seems to prevent the establishment of 

 the young rather than destroy the eggs. 



Blister mite ( E r i O' p h y ei s p y r i Nal.) . This minute 

 enemy of the fruit grower is becoming increasingly abundant in the 

 Hudson valley, bad infestations having been reported tO' the writer 

 from several Columbia county localities and also from Washing- 

 tonville. The general characteristics of the work of this pest and 

 methods of controlling it have been given by the writer in his pre- 

 ceding report [N. Y. State Mus. Bui. 134, p. 48]. 



Small fruit insects 

 Grape blossom midge ( Co n t a r i n i a j o h n s o n i Sling. ) . 

 We were extremely fortunate in rearing this tiny midge last spring 

 from material collected the preceding June. The parent insect is 



