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Milbert's Tortoiseshell

Milbert's Tortoiseshell (Aglais milberti) is a beautiful medium-sized butterfly found in much of the northern U.S. states, and southern Canadian provinces. Its overall color is brown, with various shades of orange spots and lines. It also has a row of bluish spots in the hindwing margin. It is often found in moist woodlands, fields and meadows.

Wing spread: 1 5/8" - 2.5"

Host plants: Nettles

Milbert's Tortoiseshell Butterfly Life Cycle Stages and Times

Stage Typical Duration
Egg stage 4 to 14 days
Caterpillar (larval) stage 3 to 4 weeks
Chrysalis (pupal) stage 7 to 18 days
Adult butterfly stage 6 to 20 days

 

Milbert's Tortoiseshell Butterfly ... dorsal view
Milbert's Tortoiseshell Butterfly

Milbert's Tortoiseshell Butterfly ... ventral view
Milbert's Tortoiseshell Butterfly ... wings closed

Milbert's Tortoiseshell Caterpillar
Milbert's Tortoiseshell Caterpillar

A distant relative ... the California Tortoiseshell Butterfly
California Tortoiseshell Butterfly

 

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