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Like other Duskywings, this Juvenal’s Duskywing sleeps with its wings folded roof-like over its back. This large butterfly’s wing span measures 3.0 to 3.7 cm. The upperside of the male is brown with white flecks, indistinct dark markings; female has larger markings and spots. The underside of its hind wing has 2 round pale spots below the apex.
To seek females, males perch in forest clearings or edges, on branches about high above the ground. Females lay eggs singly on young leaves and seedlings of Oaks. Caterpillars are light green with white specks, thick hair, and a red, yellow, or orange head. They feed on the Oak leaves and rest in nests of rolled or tied leaves. Fully-grown caterpillars hibernate.
Juvenal’s Duskywing flies from early May to late June, and can be found in Algonquin Highlands’ woodlands and fields near Oaks. The adult’s food source is nectar from flowers such as Blueberry, Dandelion, Lilac and Wisteria.
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JUVENAL'S DUSKYWING
Erynnis juvenalis
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