Milbert’s Tortoiseshell

Nymphalis milberti
True Brushfoots

Appearance: Upperside mainly dark brown with contrasting yellow orange band near outer edge of both wings. Shows row of blue spots on trailing edge of hindwing and distinct pattern of orange on leading edge of forewing. Underside two-toned brown with outer half lighter in color with fine striations. Forewing tip is squared-off.

Size: Medium; 1 1/2 to 2 1/2 inches

Habitat: Stream sides, wet meadows near woodlands, marshes

Season: Late March to mid-September

Larval Foodplant: Species of stinging nettle (Urtica)

Did You Know…
Female butterfly lays large clusters of eggs on underside of host plant. Caterpillars feed gregariously, later solo and can construct a folded leaf tent before pupation (Pyle, 1981). Because the adults emerge mid-Summer, fly into the fall and overwinter until the following spring, like other Polygonia and Nymphalids, they might be seen on the wing any day of the year (Pyle, 2002).

Species Gallery (click to enlarge)