226 WILLIAM T. M. FORBES 



Key to the species 

 1. A white apical spot. 



2. Outer joints of antennae white 1. hydrangiceella. 



2. Only the minute last two joints of antennae white 2. ampelopsiella. 



1. No apical spot. 



2. Costal spots extend into an angulated fascia 3. major. 



2. Costal spot moderate. 



3. Fascia curved, turning obliquely in to inner margin at basal angle; 

 narrow, half as wide on inner margin as the dark areas before and 

 beyond it. 



4. Antennae wholly dark 5. isabella. 



4. Apical joint of antennas white 6. viticordifoliella. 



3. Fascia straight, rather beyond basal angle, at inner margin nearer to 

 silver spot than to base, and as wide as the dark areas before and 

 beyond it. 

 4. Antennae with white apical segment; ground usually coppery. 



4. cornifoliella. 

 4. Antennae all dark, ground usually greenish 7. nysscefoliella. 



1. A. hydrangiaeella Chambers. Similar to ampelopsiella, the apical spot bright 

 silver and as large as the pre-apical ones. 5 mm. 



Mine and case like those of A. viticordifoliella on Hydrangea nivea. Moth in 

 August. 



Kentucky; southern Ohio. 



2. A. ampelopsiella Chambers. A small dot of silver scales at apex. 5 mm. 

 Larva on Ampelopsis. Moth in August. 



Kentucky; Missouri; Ohio; New York: Fort Edward. 



3. A. major Kearfott. Middle third of antennae silvery white; fore wing with 

 base broadly metallic; fascia very narrowly interrupted at middle; dorsal dash 

 narrow, extending up and out, about half in the fringe; a fascia across the wing 

 just before the apex, not extending into the fringe, nearly broken at the middle, 

 and zig zag like a thick S. 9 mm. 



Moth in early June. 



Black Mountains, North Carolina. 



4. A. cornifoliella Clemens. Antennae dark brown, scape somewhat ochreous. 

 Fore wing not very bright, with a coppery hue; fascia rather narrow, not con- 

 stricted on the fold, less distinct, and suffused with copper toward costa. Ground 

 bright coppery toward apex, with the usual two golden spots. 7% mm. 



The larva mines Cornus florida in September. It is white, with dark brown 

 head and neck, and series of dorsal and ventral dots. 

 I have seen material from Cincinnati, Ohio. 



5. A. Isabella Clemens. Almost like A. viticordifoliella; sometimes with the 

 greenish iridescence of nysscefoliella. & mm. 



The moth has been found in May. The larva mines grape, cutting out a cir- 

 cular case; it is yellowish white, with brown dots at the middle of the body dor- 

 sally and a single ventral one. 



Pennsylvania ; Missouri. 



6. A. viticordifoliella Clemens. Moth brown with a brillant coppery tinge and 

 silver fascia and spots; differing from ampelopsiella only in the lack of the minute 

 silver apex, and probably not a distinct species. 



Larva yellowish green, without dorsal or ventral spots; cutting out a small 

 oval case for pupation. 

 Pennsylvania. 



7. A. nyssaefoliella Clemens. Antenna dark brown with the scape yellow, as 

 usual; green tint of ground variable, and not strong; golden markings broad, 



