See [page 245]
The Bronze Copper
Chrysophanus thoe
This butterfly is nearly twice as large as the American Copper to which the female of the present species bears a striking resemblance. The Bronze Copper is a rare species, occurring from New England nearly to the Rocky Mountains. The slug-shaped yellowish green caterpillar feeds upon dock and related plants. (See plate, [page 256].)
Synopsis of the Coppers
The Wanderer (Feniseca tarquinius). Wing expanse 1¼ inches. Upper wing surface tawny brown, each wing more or less marked with dark brown spots, the distinction between the colors being clear-cut, and the lines between having an angular effect. Lower surface of front wings similar in colors to upper with dark spots rectangular. Under surface of hind wings mottled with irregular spots of pale brown.
American Copper (Heodes hypophlaeas or Chrysophanus hypophlaeas). Wing expanse 1 inch. Upper surface of front wings tawny orange with margins and rectangular spots blackish. Upper surface of hind wings coppery red with a tawny orange band on outer margin. Lower surface of front wings much like upper surface; that of hind wings grayish marked with dark spots and an orange line near the margin.
Bronze Copper (Chrysophanus thoe). Wing expanse 1½ inches. Male. Upper wing surface coppery brown marked with dark spots and a tawny orange sub-marginal band along outer margin of hind wings. Under surface of front wings lighter orange with blackish spots and of hind wings grayish with blackish spots and an orange sub-marginal band. Female. Upper surface of front wings tawny orange with blackish spots.