REPORT OF THE STATE ENTOMOLOGIST 1918 107 
in nature undoubtedly appear in early June. Several specimens 
of Paralellodiposis caryae Felt were also reared from 
this gall. 
Gall (pl. to, fig. 8, and pl. 8). Subglobular, about 2 to 3 mm in 
diameter, thin-walled, monothalamous and thickly clothed with 
rather long, erect, reddish brown aN 
or sometimes fuscous hairs. The 
clothing of the galls sometimes 
presents a somewhat whitish ap- 
pearance. They much resemble 
very small closed chestnut burrs. 
Larva. Length 2.5 mm, stout, 
whitish, the head small. An- 
tennae biarticulate; breastbone 
(fig. 12) long, slender, minutely 
bidentate, the excavation broadly 
rounded, the shaft reduced. The 
body tapers slightly to a broadly 
rounded, unarmed extremity. 
Exuvium. Length2mm. An- 
tennal cases short, hardly extend- 
ing to the base of the abdomen, 
the internal basal angles weakly 
chitinized. Cephalic horns rather 
long, stout at the base, slightly 
irregular. Wing and leg cases extending to the third abdominal 
segment, the dorsum of the segments margined with a rather thick 
band of four irregular rows of stout, chitinous spines, the remainder 
of the dorsal surface finely dotted with chitinous points. 
Male. Length 1.75 mm. Antennae nearly as long as the body 
thickly clothed with short hairs, pale orange yellowish; fourteen 
sessile segments, the fifth with a length about three times its diameter, 
the circumfila stout, the loops short, broad; terminal segment con- 
stricted near the basal third, with a length nearly four times its 
diameter, broadly rounded. Palpi; the first segment presumably 
rectangular, with a length more than twice its diameter, the second 
short, greatly reduced, the third expanded and more than twice the 
length of the second. Mesonotum fuscous yellowish, the submedian 
lines sparsely haired. Scutellum dark reddish, postscutellum fus- 
cous yellowish. Abdomen dark reddish, somewhat fuscous laterally; 
genitalia fuscous yellowish, fuscous apically. Wings hyaline, short, 
very broad, costa pale yellowish. Halteres and coxae pale orange; 
femora and tibiae pale yellowish, the tarsi pale yellowish, somewhat 
fuscous apically; claws long, slender, evenly curved, the pulvilli as 
long as the claws. Genitalia; basal clasp segment short, stout; 
terminal clasp segment somewhat reduced; dorsal plate long, broad, 
triangularly emarginate, the lobes broadly rounded; ventral plate 
long, broad, broadly and lightly emarginate. 
Female. Length 2 to 3 mm. Antennae extending to the third 
abdominal segment, sparsely haired, pale yellowish, reddish apically ; 

Fig. 12  Caryomyia thompsoni, 
breastbone of larva (enlarged, orig- 
inal) 
