Milbert's Tortoiseshell
Aglais milberti (Godart, 1819)
Family: Nymphalidae
Subfamily: Nymphalinae
Identification: Forewing tip squared-off. Upperside is black with a wide orange submarginal band which grades to yellow at the inner edge of band. Narrow black marginal border on both wings; the hindwing border may contain some blue spots.
Wing Span: 1 5/8 - 2 1/2 inches (4.2 - 6.3 cm).
Life History: In the afternoon, males perch on hillsides, banks of gulches, logs, or behind bushes to watch for females. Eggs are laid in large batches of up to 900 on the underside of host plant leaves. Young caterpillars feed together in a web, while older ones feed alone and make shelters of folded leaves tied with silk. Adults hibernate, sometimes in small groups.
Flight: Two broods from May-October.
Caterpillar Hosts: Nettles (Urtica dioica and U. procera).
Adult Food: Usually flowers, such as thistles, goldenrods, and lilacs; probably also sap and rotting fruit.
Habitat: Wet areas near woodlands, moist pastures, marshes.
Range: Boreal North America south of the taiga. Southern Alaska south to California, Nevada, and New Mexico; east to Newfoundland and West Virginia.
Conservation: Not required.
NCGR:
Management Needs: None reported.
Alternate Scientific Names:
Nymphalis milberti
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Verified Sightings
Displaying 49 - 72 of 92 verified sightings
Observation date: unknown
Submitted by: legacy.reporter
Region: Hamilton County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Region: Nassau County, New York, United States
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Verified date: Dec 31, 2004
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Region: Rensselaer County, New York, United States
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Verified date: Dec 31, 2004
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Region: Tompkins County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Region: Cayuga County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Region: Essex County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Kings County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Oneida County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Orange County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
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Region: Schoharie County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Region: Westchester County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Clinton County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Genesee County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Madison County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Otsego County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Region: Sullivan County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Region: Broome County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Dutchess County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Herkimer County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: New York County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Onondaga County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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Submitted by: legacy.reporter
Region: Richmond County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Ulster County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
Observation date: unknown
Submitted by: legacy.reporter
Region: Chautauqua County, New York, United States
Verified by: legacy.verifier
Verified date: Dec 31, 2004
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