I24 NEW YORK STATE MUSEUM 
Male. Length about 1 mm. Antennae one-half longer than the 
body, sparsely haired, yellowish brown; 14 segments, the fifth witt 
stems two and one-half and two times their diameters; termina 
segment produced, the basal portion of the stem with a length four 
times its diameter, the distal enlargement subglobose and separatec 
by a deep and narrow constriction from a broadly ovate appendage. 
Palpi; first segment subquadrate, the second stout, with a length 
twice its diameter, the third slender, with a length fully twice the 
second and somewhat dilated. Mesonotum yellowish brown. Scutel- 
lum and postscutellum fuscous yellowish. Abdomen mostly dark 
brown. Wings hyaline, remarkably narrow, with a length fully twe 
and one-half times the width; costa light brown, the third vein 
uniting with the margin well beyond the apex. Halteres whitish 
transparent. Legs fuscous yellowish, the tarsal segments darker; 
claws rather stout, evenly curved, the pulvilli longer than the claws. 
Genitalia; basal clasp segment stout, truncate, terminal clasp seg- 
ment rather stout; dorsal plate narrowly and triangularly emarginate, 
the lobes obliquely truncate; ventral plate deeply and triangularly 
emarginate, the lobes obliquely and roundly truncate. 
Female. Length rt mm. Antennae nearly as long as the body, 
sparsely haired, yellowish brown; 14 segments, the fifth with a 
stem about one-third the length of the cylindric basal enlargement, 
which latter has a length twice its diameter, is slightly constricted 
near the basal third; terminal segment somewhat produced, taper- 
ing to an obtuse, knoblike apex. Palpi nearly as in the male. Meso- 
notum yellowish brown, the submedian lines fuscous yellowish. 
Scutellum and postscutellum fuscous yellowish. Abdomen dark 
brown basally, the distal segments fuscous yellowish. Wings slightly 
broader than in the male. Ovipositor as long as the body, the distal 
portion rather stout. the terminal lobes with a length three times their 
diameter, tapering slightly. 
The above descriptions were drafted from cotypes kindly placed 
at our disposal through the courtesy of Prof. V. L. Kellogg, Stanford 
University, Cal. Represented in the state collections by Cecids. 
767, 975 and a2137. 
Larva. The larva is broadly elliptical, reddish yellow in color, 
and when full grown is from 1 mm to r. 5mmlong. The breastbone, 
while well chitinized in the later Stages, is not visible in the newly 
hatched. There are no nipplelike spiracles and the skin is covered 
with fine spinules. The larva usually excretes a thick oval cocoon 
prior to pupation. (Abstract from Snow and Mills.) 
Parasites. This species is subject to attack by several natural 
enemies: Polygnotus di Plosidis Ashm.,, a parasite of 
Retinod.Jinopis Osten Sacken, is an efficient parasite of this 
species, and a mite very like Pediculoides ventricosus 
is a valuable agent in destroying the eggs, larvae and pupae. The 
latter attaches itself by its mouth-parts and forelegs to the larva, 
