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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*The orange dots on the map provide access to information about the 400 most recently verified sightings of this species. Sometimes, there are several records at the same location. Use the table view to access these records.

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
July 18, 2016 pporonto Macomb County, Michigan, United States July 18, 2016 Details
June 06, 2016 monikawood Steuben County, New York, United States June 06, 2016 Details
July 12, 2014 PDunwiddie Chelan County, Washington, United States June 02, 2016 Details
May 30, 2016 randimal Union County, Oregon, United States June 02, 2016 Details
May 13, 2016 frogbandit Anchorage Borough, Alaska, United States June 01, 2016 Details
May 25, 2016 bobscafe British Columbia, Canada June 01, 2016 Details
May 14, 2016 Sue Orlowski Lincoln County, Washington, United States May 24, 2016 Details
March 29, 2016 randimal Kittitas County, Washington, United States May 15, 2016 Details
August 18, 2014 Trailmaker Jefferson County, Ohio, United States May 10, 2016 Details
October 06, 2015 joykjh Saskatchewan, Canada May 05, 2016 Details
May 04, 2016 sseagrave Sheridan County, Wyoming, United States May 05, 2016 Details
May 10, 2014 4oclockwatch Kenai Peninsula Borough, Alaska, United States April 25, 2016 Details
March 22, 2016 wimvdam Pitkin County, Colorado, United States April 03, 2016 Details
October 24, 2015 COA1955 Morgan County, Colorado, United States March 02, 2016 Details
August 28, 2015 davidelwonger@msn.com Teller County, Colorado, United States March 01, 2016 Details
July 03, 2015 ncrosbyrd Gunnison County, Colorado, United States September 15, 2015 Details
August 24, 2015 Paul Tavares Ontario, Canada August 29, 2015 Details
July 15, 2015 MAKI Anchorage Borough, Alaska, United States August 16, 2015 Details
August 01, 2015 bobscafe British Columbia, Canada August 16, 2015 Details
August 03, 2015 jani Manitoba, Canada August 16, 2015 Details
July 14, 2011 Niayre Alberta, Canada August 15, 2015 Details
August 02, 2015 cblazo Franklin County, Pennsylvania, United States August 07, 2015 Details
August 07, 2015 curtis.lehman Allegheny County, Pennsylvania, United States August 07, 2015 Details
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 rosacmchenry@sbcglobal.net 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