180 
NORTH AMERICAN NEPTICULIDAE 
pale green. Cocoon brown. Larvae may be found in June and 
early July, and from late August until October. 
Although specimens bred on hazel are usually darker than 
those from other food plants, there is sufficient range of varia- 
tion in color among specimens bred from any one of the other 
food plants, to justify the conclusion that all are conspecific. 
24. Nepticula opulifoliella Braun 
Nepticula opulifoliella Braun, Can. Ent., xlvi, 22, 1914. 
Tuft ochraceou.s; color usually pale yellowish; eye-caps pale shining buff, 
sometimes fuscous outwardly. Thorax dark fuscous, with purple and blue 
reflections. Fore wings with j^ronounced purple and blue reflections toward 
the costa and beyond the fascia, shading to bronzj' green below the fold. At 
three-fifths is a broad very shining silver}^ fascia with faint golden luster. 
Cilia gray, extreme tips pearty white. Hind wings and cilia gray. Legs dark 
fuscous, except the middle pair, which are silvery. Abdomen purplish fuscous 
abo^'e, paler beneath in the female. 
Expanse. — 3. .5 to 4 mm. 
Localities. — Cincinnati, Ohio; Balsam, North Carolina. 
The larvae form brownish, much contorted serpentine mines 
(Fig. 38) in leaves of Opulaster iPhysocarpus opuJifolius). 
Larva yellotvish; cocoon reddish brown. Two generations; 
larvae in July and September. 
This species is very close to X. corylifolieUa, from which it is 
difficult to distinguish it. The pale collar when present is a re- 
lialile character. The more yellowish eye-caps, less lustrous 
wing with absence of reddish tints, will aid in separating this 
species from X . corylifolieUa. 
, 25. Nepticula quercipulchella Chambers 
Nepticula quercipulchella Chambers, Bull. Geol. Surv. Terr., iv, 105, 1878; 
Dyar’s No. 6216. 
Head black; color and eye-caps j^ellowish 'white, silvery; thorax and fore 
wings deep blue black, bronzed and with purple and violet reflections; the 
fascia is behind the middle, silvery white and a little wddest on the dorsal 
margin, and the wing behind the fascia is darker than before it, whilst the cilia 
are jjaler and less lustrous than the wing. Linder surface of wing, abdomen and 
legs cupreous black. 
Expanse . — 4 mm. 
Locality. — Kentucky (Chambers) . 
The above description is essentially that given by Chambers. 
According to him “the larva is bright green, with a deeper green 
line of contents; it makes a long narrow, winding, and gradually 
