628 NEW YORK STATE MUSEUM 



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May 29. This species, identified by Beutenmuller, is described in American 

 Entomological Society Transactions, 1890, 17:73. 



Oak plum gall. Amphibolips prunus W falsli. This globular gall about 

 1 inch in diameter, grows from the side of acorn cups of the black and red 

 oak, maturing in August and September. It is a solid, fleshy growth with 

 a central larval cell. The parent flies appear in April, according to Dr 

 Walsh. 



Hickory seed gall. Cccidomyia caryaccola Osten Sacken. The pale 

 green, smooth, elongate, onion-shaped galls of this species have the tip 

 prolonged into a point and are frequently found in clusters on the under- 

 side of leaves of various kinds of hickories. Osten Sacken states that the 

 galls are somewhat larger than those made by Diplosis caryae Osten 

 Sacken, and that it occurs through the summer either in separate clusters 

 or mixed with other galls, and Beutenmuller records it as common in the 

 vicinity of New York city. [pi. 1, fig. 21]. 



Diplosis caryae O. S. Clusters of the pale greenish pointed galls [pi. 

 1, fig. 8], of this species are somewhat abundant in midsummer along the 

 midrib and on the under side of hickory leaves. 



Hickory onion gall. Cccidomyia holotricha Osten Sacken. A sub- 

 globular, pubescent, onion-shaped gall occurs on the undersides of leaves of 

 shellbark and other hickories. They sometimes cover the entire under 

 surface of the leaf, producing a deformity and gradual shriveling. The 

 gall is covered with a pubescence, pale' when the gall is young and growing, 

 and becomes rose color as it approaches maturity. It is hollow and con- 

 tains a single larva. This species has been figured by Glover and Beuten- 

 muller states that it is abundant everywhere in the vicinity of New York 

 city [pi. 1, fig. 4]. 



Hickory peach gall. Cccidomyia pcrsicoidcs O. S. This rounded, 

 brownish, downy gall [pi. 1, fig. 9], is rather common in midsummer on the 

 under surface of hickory leaves. 



Hickory tube gall. Cccidomyia tubicola Osten Sacken. Narrow, 

 cylindric, tubelike galls occur on the underside of the leaves of different 

 kinds of hickories. They are inserted in a small protuberance, break off 

 very easily, are green when immature, becoming brown and blackish when 

 ripe. They are hollow, and in October contain a whitish larva with the 

 breastbone terminating anteriorly in a single elongated point. These galls 

 generally occur in clusters. This species has been figured by Glover and 

 Beutenmuller records it as very common in the vicinity of New York city 

 [pi. 1, fig. 10 ). 



