164 NEW YORK STATE MUSEUM 



This species occasionally occurs on black locust, R o b i n i a 

 pseudoacacia, in such numbers as to badly deform the young 

 leaves, preventing their unfolding and causing them to assume a 

 peculiar, podlike form. This is caused by the female depositing 

 probably two or three eggs in each unfolding leaf. The young 

 maggots cause sufficient irritation to prevent the leaf unfolding. 

 It is occasionally so abundant as to affect most of the leaves on an 

 entire hedge, as reported by Mr C. L. Williams of Glens Falls, 

 N. Y., in 1905. The adults appear in July. It is probable that 

 this species has been confused with the described D. g 1 e d i t - 

 schiae O.S., which produces similar galls on the honeylocust 

 This dark brown species with the third vein nearly straight and 

 14 sessile segments, may be separated from the allied D . g 1 e d i t - 

 chiae O.S. by the fifth tarsal segment having a length three 

 times its width and by the long ovipositor lobes, the latter tapering 

 and with a length three times their width. 



Gall. The gall of this species simply consists of badly deformed, 

 rolled leaflets forming peculiar, podlike structures about one-quar- 

 ter of an inch long. Occasionally the insect is so abundant as to 

 deform most of the young leaflets. 



Pupa. Length 1.6 mm, brownish; cephalic horns long, slender. 

 The antennal cases extend to the base of the wing pads, the latter 

 to the tip of the second abdominal segment, the leg cases to the 

 third and fourth abdominal segments; eyes dark brown. 



Dasyneura californica Felt 



1908 Felt, E. P. N. Y. State Mus. Bui. 124, p. 347 



This reddish brown species was reared February 13, 1886 by 

 Mr Pergande from bud galls on willow, Salix californica, 

 taken at Alameda, Cal. One parasite was also reared. 



Gall. This has been described simply as a bud gall and the 

 larvae inhabiting the same as pale orange. 



Female. Length 1 mm. Antennae extending to the fourth ab- 

 dominal segment, sparsely haired, reddish brown; 14 segments, the 

 fifth with a length one-half greater than its diameter, the four- 

 teenth evidently composed of two closely fused, the distal portion 

 being subconic and separated from the larger basal part by a dis- 

 tinct constriction. Palpi; first segment irregularly subquadrate, 

 the second longer, stouter, the third one-half longer and more slen- 

 der than the second, the fourth a little longer and more slender than 

 the third. Mesonotum reddish brown, the submedian lines indis- 

 tinct. Scutellum a little darker, postscutellum yellowish. Abdomen 

 reddish brown, sparsely haired. Wings hyaline, costa light brown. 

 Halteres pale yellowish ; coxae and base of femora yellowish, distal 

 part of femora, tibiae and probably tarsi darker; claws strongly 



