Attributes of Aglais milberti

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.
Taxonomy Notes:

Images of Aglais milberti

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Aglais milberti - aglais-milberti-corey-husic-cropped.jpg

Aglais milberti - aglais-milberti-corey-husic-cropped.jpg

The map below displays all BAMONA data for this species and has three different data layers:
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There are also three base layers: 1. Satellite    2. Normal   3. Hybrid

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By default, the fifty most recently verified sightings are below. Sort by Observation Date to see the most recent sightings, or filter the sightings by region to get a regional list.

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Observation Date Submitter Region Verified Datesort icon
June 28, 2015 TPeterson Modoc County, California, United States July 28, 2015 Details
July 13, 2015 jvkopple2 Ontario, Canada July 24, 2015 Details
July 20, 2015 JRonan17 Herkimer County, New York, United States July 21, 2015 Details
July 18, 2015 Sue Gregoire Schuyler County, New York, United States July 19, 2015 Details
May 31, 2015 chriso British Columbia, Canada July 10, 2015 Details
May 28, 2015 Tantanella Matanuska-Susitna Borough, Alaska, United States July 10, 2015 Details
August 15, 2012 martinametz Alberta, Canada July 10, 2015 Details
July 01, 2015 rbuist Manitoba, Canada July 06, 2015 Details
June 13, 2015 Bill Ostheimer Park County, Wyoming, United States June 17, 2015 Details
June 14, 2015 Nadine-BNJ Hamilton County, New York, United States June 15, 2015 Details
June 07, 2015 BeaLaporte Ontario, Canada June 10, 2015 Details
May 05, 2014 BabcockWebb Nebraska, United States May 14, 2015 Details
August 03, 2014 randimal Pierce County, Washington, United States May 12, 2015 Details
May 02, 2015 Sue Orlowski Adams County, Washington, United States May 05, 2015 Details
May 02, 2015 Paul Tavares Ontario, Canada May 02, 2015 Details
March 28, 2015 LibbyMegna Albany County, Wyoming, United States May 01, 2015 Details
April 26, 2015 Chris Blomme Ontario, Canada April 29, 2015 Details
October 12, 2013 tjrickert Davis County, Utah, United States April 02, 2015 Details
March 27, 2015 carlysummer Park County, Montana, United States April 02, 2015 Details
March 28, 2015 Kristie Nelson Mono County, California, United States March 30, 2015 Details
March 21, 2015 dougm Boulder County, Colorado, United States March 24, 2015 Details
March 23, 2015 sseagrave Sheridan County, Wyoming, United States March 24, 2015 Details
October 15, 2014 rmchenry Sedgwick County, Kansas, United States March 12, 2015 Details
August 21, 2014 roseanna Teller County, Colorado, United States March 11, 2015 Details
July 12, 1979 Indy Entomologist Starke County, Indiana, United States March 04, 2015 Details
July 09, 1979 Indy Entomologist Pulaski County, Indiana, United States February 25, 2015 Details
August 26, 2014 jani Manitoba, Canada November 17, 2014 Details
September 15, 2014 Cherylee Black Manitoba, Canada November 17, 2014 Details
September 23, 2014 AK2 Sweet Grass County, Montana, United States September 29, 2014 Details
September 28, 2014 Daryl Hutton Ontario, Canada September 29, 2014 Details
August 23, 2014 ddrudis Juneau Borough, Alaska, United States September 21, 2014 Details
September 17, 2014 juliereid Ontario, Canada September 17, 2014 Details
September 01, 2014 LibbyMegna Teton County, Wyoming, United States September 10, 2014 Details
August 22, 2014 Eelhsa Ontario, Canada September 10, 2014 Details
July 31, 2014 BeaLaporte Ontario, Canada August 22, 2014 Details
July 31, 2014 BeaLaporte Ontario, Canada August 22, 2014 Details
August 02, 2014 Sue Orlowski Spokane County, Washington, United States August 10, 2014 Details
July 23, 2014 BioHazard54 Wisconsin, United States August 06, 2014 Details
August 05, 2014 vgibbons Newfoundland and Labrador, Canada August 06, 2014 Details
July 30, 2014 juliereid Ontario, Canada July 30, 2014 Details
July 26, 2014 curtis.lehman (Steve Gosser) Lawrence County, Pennsylvania, United States July 27, 2014 Details
July 20, 2014 allelopath Los Alamos County, New Mexico, United States July 24, 2014 Details
July 14, 2014 erikamit Washington County, Vermont, United States July 21, 2014 Details
July 13, 2014 billrey Pennington County, Minnesota, United States July 17, 2014 Details
July 08, 2014 JDreimiller Pierce County, Washington, United States July 14, 2014 Details
June 21, 2014 LibbyMegna Albany County, Wyoming, United States July 01, 2014 Details
June 26, 2014 sseagrave Sheridan County, Wyoming, United States June 27, 2014 Details
June 21, 2014 Sue Orlowski Spokane County, Washington, United States June 25, 2014 Details
June 13, 2014 Paul Tavares Ontario, Canada June 17, 2014 Details
May 13, 2014 Sue Orlowski Douglas County, Washington, United States May 19, 2014 Details