174 
NORTH AMERICAN NEPTICULIDAE 
13. Nepticula terminella Braun 
Nepticula terminella Braun, Can. Ent., xlvi, 23, 1914. 
I’uft on the face dull brownish, on the vertex and head black; color and eye- 
caps shining white, with a very faint yellow' tinge. Thorax bronzy. Costal 
half of the fore w'ing to the fascia, blue-purple, the blue predominating at the 
extreme edge; below' the costa the w'ing shades into a deep In-illiant golden 
color, becoming more bronzy as it nears the fascia. The fascia is situated just 
beyond the middle of the wing, is ahnost straight and has a brilliant silvery 
luster. Apical third of the wing Ijlue-purple, blue predominating. Just below 
the apex a double row of silvery scales margins the termen, becoming a single 
row' tow'ard the dorsum and sometimes connected with the fascia. Cilia gray. 
Hind w'ings and cilia gray, with a purple tinge. Legs dark gray, tibiae and 
tarsi of the fore pair and tarsi of the others, ocherous. Abdomen dark pur- 
plish gray above, yellow'ish l^eneath toward the tip, anal tuft yellow. 
Expanse . — 5 to 5.5 mm. 
Localities. — Ohio; Kentucky; Oak Station, Pennsylvania 
(Marloff). 
The mine (Fig. 36) occurs on various species of oak, most 
commonly on red oak {Quercus ruhra) and pin oak {Q. palus- 
tris). It is a pale greenish, gradually broadening linear tract, 3.5 
mm. wide at the end (lieing thus broader than any except the 
true blotch mines on oak), with a blackish line of frass through 
the center. Larva yellow even when very young; thus this mine 
can early be distinguished from the other linear mines on oak. 
Cocoon ocherous to brown. 
There are three generations a year, and in favorable seasons, a 
fourth. Mines containing full-grown larvae may be collected 
in the middle of June, the latter part of July, the end of August 
and beginning of September, and during October and early 
November. 
14. Nepticula villosella Clemens 
Nepticula villosella Clemens, Proc. Ent. Soc. Phila., i, 84, 1861; Tin. No. 
Am., 174, 1872; Braun, Journ. Cin. Soc. Nat. Hist., xxi, 94, 1912; Dyar’s 
No. 6224. 
Syn. dallasiana Frey and Boll, Stett. Ent. Zeit., xxxvii, 228, 1876; Dyar’s No. 
6195. 
Tuft orange-ochraceous; eye-caps pale golden. Thorax and fore wings to 
the fascia brilliant metallic bronzy, somewhat purple at the base of costa; 
fascia at tw'o-thirds golden. Wing beyond the fascia blue-purple, with a large 
spot at the apex and the apical cilia golden, concolorous w'ith the fascia. Hind 
wings and cilia gray. Legs black, posterior tarsi silvery. Abdomen black. 
Expanse. — 4.5 mm. 
Localities . — Pennsylvania (Clemens); Texas (Boll); Ohio; Ken- 
tucky. 
