Leaf tier of Blueberry
Croesia curvalana

The adult is a small moth, about 6 mm long, with a wingspan 1.4 to 1.6 cm. The thorax and margins of the wings are yellow; the central portion of the front wing is reddish brown, with a small kidney-shaped yellow spot on each forewing. The hind wings are gray with a fringe of white. The eggs are small, approximately 0.3 mm in diameter, and oval. The eggs are white in colour when they are first laid, but turn brown after three days. The first to third instar larvaeare cream coloured with a dark thorax and black head. The fourth instar larvae are yellowish with a cinnamon brown head and thorax. The pupae are dark brown and about 5 to 7 mm in length.