Wing span: 1 1/4 - 1 7/8 inches (3.2 - 4.8 cm).
Caterpillar hosts: Knotweeds (Polygonum) and docks (Rumex) in the buckwheat family (Polygonaceae).
Eggs are laid singly on plants. Eggs hibernate until spring; caterpillars eat leaves. The larva is yellowish green with a dark stripe down the back.
Two overlapping broods per season is common.
Habitat: Low, wet areas such as bogs, marshes, wet meadows, ponds.
Pictures taken July 1, 2008
| Kingdom | Animalia | (Animals) |
| Phylum | Arthropoda | (Arthropods) |
| Superclass | Hexapoda | (Hexapods) |
| Class | Insecta | (Insects) |
| Subclass | Pterygota | (Winged Insects) |
| Order | Lepidoptera | (Butterflies and Moths) |
| Superfamily | Papilionoidea | (Butterflies) |
| Family | Lycaenidae | (Gossamer Winged Butterflies) |
| Subfamily | Lycaeninae | (Coppers) |
| Genus | Lycaena | |
| Species | hyllus | (Bronze Copper) |