198 
NORTH AMERICAN NEPTICULIDAE 
The larvae form galls on petioles of leaves of poplar. “The 
gall is almost globular, of about the size of a pea, and is a swelling 
of the petiole close to the leaf; it is somewhat rugose longitudinally 
and of a grayish color. The course of the petiole is generally very 
distinct along its upper side, being smooth and of a reddish brown 
or yellowish color. The cavity is more or less irregular on ac- 
count of the woody fibers, which run through the walls of the 
gall and which are not eaten bj' the larva.” I have noted the 
galls on petioles of leaves of Populus grandidentata at Sugar Grove, 
Fairfield Go., Ohio. The larvae mature in Octol)er, the moths 
issuing in May of the following year. 
2. Ectoedemia castaneae Biisck 
Ectoedemia custaneae Busck, Proc. Ent. Soc. ash., xv, 103, 1913. 
Palpi and lower part of face ocherous; tuft l)lack above. Antennae fuscou.s 
with narrow pale annulations and creamy-white eye-caps. Thorax blackish 
brown, si)rinkled with ocherous scales posteriorly, the tip ocherous. Scales 
of the fore wing bluish white, mostly deeply tii>i)ed with l)lackish brown, so 
that the wing appears ahnost uniformly densely dusted. Cilia fuscous. Hind 
W'ing dark fuscous, blackish along the costa, with lighter ocherous-fuscous 
cilia; male with a yellowish costal hair-tuft. Legs ocherous, shaded with 
fuscous outwardly. Abdomen dark fuscous with ocherous anal tuft and och- 
erous underside. 
Expanse. — 7.5 t« 8 mm. 
Loccdities. — Vietch, Virginia (Hopkins and Snyder); Powell 
County, Kentucky; Allegheny County, Penns^dvania (iMarloff). 
The larvae form .galls encircling 3mung twigs of chestnut, 
resembling in shape and size, as (Mr. Busck notes, egg-masses of 
the forest tent caterpillar. Galls were observed on chestnut in 
Kentucky", but no moths were reared. 
3. Ectoedemia phleophaga Busck 
Ectoedemia phleophacja Busck, Ins. Insc. Men., ii, 3, 1914. 
Palpi pale ocherous; tuft ocherous, sometimes dark tipped above. An- 
tennae dark fuscous with narrow' pale annulations and creamy-white eye- 
caps. Thorax and basal half of fore wings dark bluish fuscous; on the outer 
half of the wing the scales are j)aler, bluish toward their bases and tipped with 
black. A poorly defined light ocherous costal patch at the apical third and a 
similar patch opposite it on the dorsal margin. Hind wings and cilia j)ale 
ocherous fuscous; in the male with the costa excised from the middle and with 
a long pale ocherous hair-pencil at the base of costa. Legs ocherous on the 
inner side, fuscous outwardly. Abdomen .yellowish fuscous. 
Expanse. — 9 to 10 mm. 
