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
Get your BAMONA Gear!
Please donate!
We depend on donations to keep Butterflies and Moths of North America freely available. We want to express our gratitude to all who showed their support by making a contribution this year. You can donate to support this project at any time.
Advertise with us!
Do you have a product or service that you think would interest BAMONA users? If you would like to advertise on this website, contact us by email, or use the contact form and select the "Advertising" category.
Verified Sightings
Displaying 25 - 48 of 2734 verified sightings
Observation date: May 16, 2024
Submitted by: Geoff Urwin
Region: Saskatchewan, Canada
Verified by: Tom Middagh
Verified date: May 19, 2024
Observation date: May 04, 2024
Submitted by: NikkiM
Region: Stillwater County, Montana, United States
Verified by: J_Martineau
Verified date: May 07, 2024
Observation date: Apr 22, 2024
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Apr 22, 2024
Observation date: Aug 29, 2023
Submitted by: Quentin Betencourt
Region: Quebec, Canada
Verified by: jmgesell
Verified date: Apr 16, 2024
Observation date: Sep 02, 2022
Submitted by: tiki33wv
Region: Matanuska-Susitna, Alaska, United States
Verified by: BAMONA
Verified date: Apr 09, 2024
Observation date: Apr 07, 2024
Submitted by: chalicerae (Alvin Jacobs)
Region: Manitoba, Canada
Verified by: chalicerae
Verified date: Apr 08, 2024
Observation date: Mar 21, 2024
Submitted by: Cactuswren1976
Region: Los Alamos County, New Mexico, United States
Verified by: stevecary
Verified date: Mar 23, 2024
Observation date: May 20, 2004
Submitted by: natureali
Region: Kern County, California, United States
Verified by: Ken Davenport
Verified date: Mar 21, 2024
Observation date: Mar 08, 2024
Submitted by: SuesB
Region: Deschutes County, Oregon, United States
Verified by: Ken Davenport
Verified date: Mar 13, 2024
Observation date: Jul 01, 2023
Submitted by: terrymortier
Region: Douglas County, Wisconsin, United States
Verified by: jmgesell
Verified date: Mar 06, 2024
Observation date: Jul 17, 2023
Submitted by: stevecary
Region: Rio Grande County, Colorado, United States
Verified by: mikefisher
Verified date: Feb 19, 2024
Observation date: Nov 02, 2023
Submitted by: Dangergirl67
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Dec 15, 2023
Observation date: Nov 02, 2023
Submitted by: Dangergirl67
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Dec 13, 2023
Observation date: Nov 02, 2023
Submitted by: Dangergirl67
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Dec 13, 2023
Observation date: Nov 22, 2023
Submitted by: Dangergirl67
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Dec 13, 2023
Observation date: Sep 17, 1999
Submitted by: jmgesell
Region: Stearns County, Minnesota, United States
Verified by: jmgesell
Verified date: Nov 25, 2023
Observation date: Jun 26, 2023
Submitted by: Bob Patton
Region: Shoshone County, Idaho, United States
Verified by: stevekohler
Verified date: Nov 24, 2023
Observation date: Aug 26, 2023
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Nov 06, 2023
Observation date: Sep 30, 2023
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Oct 23, 2023
Observation date: Oct 05, 2023
Submitted by: MAKI
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Oct 17, 2023
Observation date: Oct 08, 2023
Submitted by: rajanrao
Region: Alpine County, California, United States
Verified by: Ken Davenport
Verified date: Oct 14, 2023
Observation date: Sep 30, 2023
Submitted by: Ednkan
Region: Knox County, Ohio, United States
Verified by: rogerdowner
Verified date: Oct 02, 2023
Observation date: Aug 25, 2023
Submitted by: MinPinLord
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Sep 28, 2023
Observation date: Sep 08, 2023
Submitted by: NewbieWatcher
Region: Alberta, Canada
Verified by: Paul Prappas
Verified date: Sep 28, 2023
- ‹ previous
- 2 of 114
- next ›