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 49 - 72 of 2709 verified sightings
Observation date: Jul 05, 2023
Submitted by: mrsclaus
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Jul 23, 2023
Observation date: Jul 17, 2023
Submitted by: glennfine
Region: Siskiyou County, California, United States
Verified by: Ken Davenport
Verified date: Jul 19, 2023
Observation date: Jul 14, 2023
Submitted by: Just Julie
Region: Yellowstone County, Montana, United States
Verified by: J_Martineau
Verified date: Jul 17, 2023
Observation date: Jul 12, 2023
Submitted by: John Gibbons
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Jul 14, 2023
Observation date: Jul 01, 2023
Submitted by: tjay13
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 02, 2023
Observation date: Jun 22, 2023
Submitted by: pauhana
Region: Boulder County, Colorado, United States
Verified by: mikefisher
Verified date: Jul 02, 2023
Observation date: Jun 16, 2023
Submitted by: cdisney
Region: Saskatchewan, Canada
Verified by: alchem30
Verified date: Jun 30, 2023
Observation date: Jun 23, 2023
Submitted by: Paul Prappas
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Jun 24, 2023
Observation date: May 03, 2023
Submitted by: KelseyM
Region: Alberta, Canada
Verified by: John Calhoun
Verified date: Jun 05, 2023
Observation date: May 01, 2023
Submitted by: Joyce Kozdrowski
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: May 06, 2023
Observation date: Apr 29, 2023
Submitted by: DeepSkyKelly
Region: Colfax County, New Mexico, United States
Verified by: stevecary
Verified date: May 04, 2023
Observation date: Aug 20, 2022
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: stevekohler
Verified date: Apr 24, 2023
Observation date: Mar 21, 2021
Submitted by: wildebynature
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Apr 15, 2023
Observation date: Mar 21, 2021
Submitted by: wildebynature
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Apr 15, 2023
Observation date: Apr 01, 2023
Submitted by: DeepSkyKelly
Region: Colfax County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 02, 2023
Observation date: Mar 20, 2023
Submitted by: Flutterby2023
Region: Ontario, Canada
Verified by: curtis.lehman
Verified date: Mar 22, 2023
Observation date: Aug 12, 2022
Submitted by: NikkiM
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Mar 14, 2023
Observation date: Sep 03, 2022
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Feb 27, 2023
Observation date: Aug 03, 2020
Submitted by: Todd Boland
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Feb 12, 2023
Observation date: Aug 14, 2020
Submitted by: Todd Boland
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Feb 11, 2023
Observation date: Jul 26, 2020
Submitted by: Todd Boland
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Feb 11, 2023
Observation date: Aug 11, 2021
Submitted by: Todd Boland
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Feb 10, 2023
Observation date: Jun 21, 2019
Submitted by: frogbandit
Region: Matanuska-Susitna, Alaska, United States
Verified by: curtis.lehman
Verified date: Feb 07, 2023
Observation date: May 02, 2020
Submitted by: odonatak@gmail.com
Region: Juneau, Alaska, United States
Verified by: curtis.lehman
Verified date: Feb 07, 2023
- ‹ previous
- 3 of 113
- next ›