194 
NORTH AMERICAN NEPTICULIDAE 
fuscous, and a broad purplish fuscous band at the apex of the wing. Beyond 
this band the cilia are pale ocherous, giving the api)earance of an ocherous apex 
preceded by a dark band. Cilia opposite the ends of the Imnd concolorous 
with it. Hind wings and cilia jiale gray. Legs ocherous. Abdomen purj)lish 
fuscous above, ocherous beneath. 
Expanse. — 3.. 5 to 4.5 mm. 
Localities. — Pennsylvania (Clemens, Marloff) ; Ohio; Kentucky, 
IMines occur on several species of hawapple, most commonly on 
Crataegus crus-galU and C. punctata; Clemens notes it on C. 
paruifoUa Ait. The mine (Fig. 49) is comparatively short, 
rapidly increasing in diameter and measuring about 2 mm. in 
width in the later portion of its course, with an irregular line of 
frass running through it. Larva bright green; cocoon reddish 
brown. 
There are two generations a year; larvae may be collected in 
early July and at the beginning of September. 
This species is distinguished from all others with yellowish 
ground color by the entire absence of dusting. The much broader 
mine and bright green larva separate it in early stages from N. 
scintiUans. 
51. Nepticula nigriverticella Chambers 
Nepticula nigriverlicclla Chambers, Cin. Quart. Journ. Sci., ii, 118, 1875; 
Dyar’s No. 6205. 
Syn. maculosella Cham])ers, Journ. Cin. Soc. Nat. Hist., ii, 193, 1879; 
Dyar’s No. 6201. 
Face ochraceous, tuft above dark Ijrow n; collar and eye-caps pale ocherous, 
antennal stalk fuscous. Thorax and fore wings pale ocherous dusted with 
purplish black scales. At the base of the dorsal margin is a purplish black 
spot extending half w’ay across the w ing, and occasionally narrowly reaching 
the costa, which is often dark brown near the base. At the beginning of the 
cilia is a broad purpli.sh black fascia; beyond it the cilia are pale ocherous. 
Hind wings and cilia pale grayish buff, sometimes darker. Legs pale ocherous. 
Expanse . — 5 mm. 
Localities. — Kentucky (Chambers); Ohio; Texas (Chambers). 
The range of variation of captured specimens taken in iVIay 
at Cincinnati is sufficient to include N. maculosella described from 
Texas specimens. 
52. Xepticula populetorum Frey and Boll 
Nepticula populetorum Frey, and Boll, Stett. ent. Zeit., xxxix, 276, 1878; Dyar’s 
No. 6212. 
Tuft ocherous, becoming dark brown behind. Collar and eye-caps pale 
creamy, antennal stalk dark fuscous. Thorax and fore w'ings buff or pale 
