160 NEW YORK STATE MUSEUM 
and pleurae pale salmon, genitalia fuscous yellowish. Halteres 
yellowish transparent. Legs pale yellowish, the femora dorsally 
blackish, tibiae and tarsi progressively fuscous apically. 
Female. Length 1.75 mm. Antennae with presumably 15 
segments, other characters about as in the male. 
Collected and reared by Dr M. T. Thompson of Clark University, 
Worcester, Mass. from a fleshy fold or lamina near the midvein on 
leaves of sweet fern. 
Type Cecid. 1103, N. Y. State Museum. 
Hormomyia crataegifolia n. sp. 
Male. Length 4mm. Antennae a little longer than the body, 
sparsely haired, reddish brown, 14 segments. Mesonotum dark 
brown, the submedian lines sparsely clothed with whitish hairs, a 
few scattered hairs on the lateral borders. Scutellum dark brown, 
with a few whitish hairs on each side, postscutellum slightly darker. 
Abdomen dark red, pleurae darker. Halteres and coxae yellowish 
red, the remainder of the legs a little paler, with the tarsi somewhat 
whitish. 
Female. Length 4 mm. Antennae extending to the fourth 
abdominal segment, yellowish red or reddish, sparsely haired, 14 
segments. Colorational characters about as in the opposite sex. 
Bred from whitish, oval cocoons adhering to Crataegus leaves. 
Larvae taken from the cockscomb gall on Crataegus. 
Type Cecid. a1362, N. Y. State Museum. 
Hormomyia needhami n. sp. 
Male. Length 6 mm. Antennae extending to the fourth 
abdominal segment, finely haired, pale fuscous yell wish, the stems 
semitransparent, 26 segments; face fuscous. Mesonotum yellowish, 
the anterior and lateral margins bordered by fuscous, the latter 
slightly produced on the median line. Scutellum and postscutellum 
pale yellowish, the latter dark brown posteriorly. Abdomen 
fuscous yellowish, sparsely clothed with fine hairs. Halteres 
fuscous yellowish. Legs a variable fuscous yellowish. 
Taken by Dr James G. Needham at Lake Forest, Ill., June 6, 1906. 
Type Cecid. 788, N. Y. State Museum. 
Hormomyia truncata n. sp. 
Male. Length 3 mm. Antennae nearly as long as the body, 
thickly haired, pale yellowish, 23 segments; mouth parts fuscous 
