ANNETTE F. BRAUN 
197 
]’€natio7i (Fig-. 3). — Fore wings; media coalescing with cubitus 
at base, then passing obliquely to radius beyond Ho+s, and 
anastomosing with radius to beyond middle of wing. H.i sep- 
arate. Media single-1 )ranched. Culntus reaching margin. 
Flind wings: media single-branched. 
The position of the middle spurs on the posterior tibiae, the 
relatively smaller eye-caps, and broader wings will distinguish 
this genus from those si^ecies of Nepticida which have identical 
venation. 
The larvae of the species whose life history is known form 
galls on twigs or petioles, or are miners in the bark of twigs. The 
egg is somewhat more circular in outline than that of Nepticiild. 
There is l)ut a single generation of the moths a 3 'ear, as would be 
expected from the peculiarities of the life history. 
In all l)ut the unicolorous E. popidella, the fore wings are 
mottled with fuscous scales, or with dark-tipped scales. Ill- 
defined markings are formed by the grouping of these dark 
scales in patches. The markings differ from those species of 
A'^epticida which resemble Ectoedemia most in structural char- 
acters. 
Key to the Species of Ectoedemia 
a. Fore wings unicolorous 1. populella 
aa. Fore wings mottled. 
1). Dark-tipped scales evenly distributed 2. castaneae 
bl). Dark-tij)ped scales more or less collected into patches, 
c. Base of fore wing with scattered dusting except near costa. 
5. obrutella 
cc. Dusting dense near base of wing. 
d. A poorly defined pale fascia at basal third 4. heinrichi 
dd. Xo fascia at basal third 3. phleophaga 
1. Ectoedemia populella Busck 
Ectoedemia popidella Busck, Proc. Ent. Hoc. Wash., viii, 9S, 1907. 
“.\ntennae dark cupreous brown, basal joint forming a small eye-cap en- 
larged by heavy light yellow scaling. Face and head reddish ocherous. 
Thorax dark l)rown. Fore wings unicolored shining dark cupreous brown, with 
strong green and violet iridescence according to the light. Hind wings lighter 
cupreous l)rown, with ocherous cilia. Abdomen shining dark fuscous. Legs 
ocherous-fuscous with a bluish metallic sheen. 
“.Alar expan se : 7-8 . 5 m m . ” 
Localities . — ^Massachusetts (]Miss Clarke); Xew Hampshire 
(Koel)ele); Ohio. 
TRANS. .AM. ENT. SOC., XLIIl. 
