106 NEW YORK STATE MUSEUM 
stout, the loops short, broad; terminal segment produced, tapering, 
narrowly rounded. Palpi; first segment short, stout, second one- 
half longer, slender, the third broadly oval, the fourth a little longer, 
tapering distally. Mesonotum shining yellowish brown, the sub- 
median lines thickly haired. Scutellum dark reddish brown, post- 
scutellum reddish orange. Abdomen dark red, somewhat fuscous 
basally and laterally, the segments sparsely margined with fuscous 
hairs. Genitalia fuscous yellowish. Wings hyaline, costa yellowish 
brown. Halteres yellowish, fuscous subapically. Coxae, femora and 
tibiae fuscous yellowish, the tarsi a little darker; claws stout, strongly 
curved, the pulvilli as long as the claws. Genitalia; basal clasp 
segment stout; terminal clasp segment moderately slender; dorsal 
plate short, deeply and triangularly emarginate, the lobes broadly 
rounded; ventral plate broad, very broadly emarginate, the lobes 
broadly rounded. 
Female. Length 1.75 mm. Antennae extending to the second 
abdominal segment, sparsely haired, pale yellowish carmine apically; 
fourteen segments, the fifth with a length two and one-half times 
its diameter; rather high circumfila at the basal third and apically; 
terminal segment slightly reduced, tapering, narrowly rounded. 
Palpi; first segment short, stout, the second broadly oval, the third 
a little longer, more slender, the fourth twice the length of the third. 
Mesonotum shining dark brown, the submedian lines thickly haired. 
Scutellum fuscous yellowish, postscutellum yellowish. Abdomen 
yellowish orange, the basal segments reddish; ovipositor yellowish 
transparent. Halteres pale yellowish. Coxae, femora and tibiae 
mostly pale straw, the tarsi a variable fuscous yellowish; claws 
rather slender, evenly curved, pulvilli as long as the claws. Ovi- 
positor short, terminal lobes protuberant, triangular. Cecid. args. 
Caryomyia thompsoni Felt 
1908 Felt, E.P. N. Y. State Mus. Bul. 124, p. 388 (Hormomyia) 
1918 —————_ N.Y. State Mus. Bul. 200, p. 7 
This species was first reared by the late Dr M. T. Thompson, 
who apparently obtained it from a gall which he described as yellow, 
green or brown, melon-shaped, with a depressed center and either 
smooth with sparse, short, whitish hairs or quite pubescent. Subse- 
quent rearings in the spring of 1908 enabled us to obtain in some 
numbers apparently the same insect from a peculiar small, globular, 
long-haired, thin-walled gall taken the preceding fall in the vicinity 
of New York City and which is probably the same as Thompson’s 
very pubescent gall. Apparently the same gall was taken by L. H. 
Weld at Ithaca, N. Y., and at Evanston, IIl., judging from the 
photograph received. The original characterization of this species 
was drafted from an alcoholic specimen. The later descriptions are 
from recently reared material. The insects winter in the gall and 
