REPORT OF THE STATE ENTOMOLOGIST 1918 225 
fall. The galls are very local in the vicinity of Nassau, we have 
received them from Michigan, and Jarvis records them as somewhat 
rare at Ontario, Canada. Eupelmus dryorhizoxeni 
Ashm. and Torymus species were reared from this gall. 
Gall. Length 1 cm. Height 2 cm, strongly compressed, crinkled 
with an irregular, serrate edge. Color mostly green, irregularly 
marked with yellowish, especially in the older galls, portions of the 
tips frequently turning brown. 
Cocoon. Length 4 mm, diameter 1.5 mm. This is composed of 
a few whitish threads to which numerous fine particles of sand 
adhere. The structure is so open that the deep red body of the 
larva can be easily seen. 
Male. Length 4 mm. Antennae a little longer than the body, 
sparsely haired, reddish brown; fourteen segments, the fifth 
with stems each one-fourth longer than TT 
their diameters; terminal segment pro- 
duced, the distal enlargement broad, 
subglobular and with a slightly pro- 
longed subconic tip. Palpi; the first 
segment stout, subrectangular, the sec- 
ond shorter, broadly oval, the third one- 
half longer, narrowly oval. Mesonotum 
dark brown, the submedian lines 
sparsely clothed with whitish hairs and 
a few scattered hairs on the lateral bor- 
ders. Scutellum dark brown, a few 
whitish hairs on each side, postscutel- 
lum slightly darker. Abdomen dark 
red, pleurae darker. Wings hyaline, 
costa reddish brown, the third vein Fig. 48 Trishormomyia 
uniting with the marginalittle beyondthe  ¢rataegifolia, fifth antennal 
apex; halteres and coxae yellowish red, segment of female (enlarged, 
the remainder of the legsalittle paler, with original) 
the tarsi somewhat whitish; claws stout, gif 
evenly curved, the pulvilli shorter than the claws. Genitalia; basal 
clasp segment long, stout; terminal clasp segment stout, slightly 
swollen near the distal third and apically; dorsal plate short, broad, 
broadly rounded; ventral plate short, broad, broadly and roundly 
emarginate, the lobes irregularly rounded. ] 
Female. Length 4 mm. Antennae extending to the fourth 
abdominal segment, yellowish red or reddish, sparsely haired; four- 
teen segments, stem of fifth (fig. 48) with a length about one-sixth 
of the subcylindric basal enlargement, which latter has a length fully 
three times its diameter, is slightly constricted near the basal third; 
heavy, though rather short, circumfila at the basal fourth, near the 
middle and subapically, the loops a little longer than the distance 
between the supporting stems; terminal segment produced, slender, 
with an irregular apical appendage. Palpi; the first segment long, 
irregularly rectangular, the second short, irregularly oval, the third 

