Arctic Blue
Plebejus glandon (de Prunner, 1798)
Family: Lycaenidae
Subfamily: Polyommatinae
Identification: Geographically variable. Upperside of male gray-blue, female orange-brown; both sexes with dark cell spots on both wings. Underside hindwing with postmedian black spots lacking or enclosed by white patches.
Wing Span: 7/8 - 1 inches (2.2 - 2.6 cm).
Life History: Eggs are laid singly on leaves, bracts, or sepals of the host plant. Caterpillars or chrysalids hibernate.
Flight: One brood from early May to late September, mainly June-August.
Caterpillar Hosts: Possibly Diapensia lapponica, Dodecatheon, and Androsace septentionalis.
Adult Food: Flower nectar.
Habitat: Bogs, tundra, gravelly hills, alpine fell-fields, and subalpine meadows.
Range: Holarctic. Alaska east to Newfoundland, south through the mountains of the West to Washington, northern Arizona, and northern New Mexico.
Conservation: Not usually of conservation concern.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: Study conservation needs and implement if necessary.
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Verified Sightings
Displaying 1 - 24 of 277 verified sightings
Observation date: Jul 07, 2024
Submitted by: Joshua C
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Apr 14, 2025
Observation date: Jun 25, 2024
Submitted by: Joshua C
Region: Los Alamos County, New Mexico, United States
Verified by: stevecary
Verified date: Feb 28, 2025
Observation date: Sep 02, 2024
Submitted by: NikkiM
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 05, 2024
Observation date: Jul 28, 2024
Submitted by: ncrosbyrd
Region: Carbon County, Montana, United States
Verified by: J_Martineau
Verified date: Sep 04, 2024
Observation date: Aug 01, 2024
Submitted by: Reneerob17
Region: San Miguel County, New Mexico, United States
Verified by: stevecary
Verified date: Aug 05, 2024
Observation date: Jul 13, 2024
Submitted by: Cactuswren1976
Region: Taos County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 16, 2024
Observation date: Jun 25, 2024
Submitted by: topper72
Region: Los Alamos County, New Mexico, United States
Verified by: stevecary
Verified date: Jun 29, 2024
Observation date: Jun 14, 2024
Submitted by: dsperanza
Region: Montana, United States
Verified by: J_Martineau
Verified date: Jun 18, 2024
Observation date: Jul 15, 2023
Submitted by: Joshua C
Region: Bernalillo County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 31, 2023
Observation date: Jul 18, 2023
Submitted by: regina rochefort
Region: Skagit County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 20, 2023
Observation date: Jul 09, 2023
Submitted by: tjay13
Region: Santa Fe County, New Mexico, United States
Verified by: stevecary
Verified date: Jul 12, 2023
Observation date: Jul 06, 2023
Submitted by: regina rochefort
Region: Skagit County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 09, 2023
Observation date: Jul 07, 2023
Submitted by: weflybye
Region: Jefferson County, Washington, United States
Verified by: davidwdroppers
Verified date: Jul 08, 2023
Observation date: Jul 10, 2018
Submitted by: Cheri Phillips
Region: Larimer County, Colorado, United States
Verified by: mikefisher
Verified date: May 29, 2023
Observation date: Jul 20, 2022
Submitted by: Pheasantboy77
Region: Gallatin County, Montana, United States
Verified by: stevekohler
Verified date: Apr 24, 2023
Observation date: Jul 20, 2022
Submitted by: Pheasantboy77
Region: Gallatin County, Montana, United States
Verified by: stevekohler
Verified date: Apr 24, 2023
Observation date: Jul 05, 2021
Submitted by: frogbandit
Region: Anchorage, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 11, 2023
Observation date: Jul 01, 2020
Submitted by: jsaunders260
Region: Matanuska-Susitna, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 07, 2023
Observation date: Jul 02, 2020
Submitted by: Rick Sinnott
Region: Anchorage, Alaska, United States
Verified by: Paul Prappas
Verified date: Feb 07, 2023
Observation date: Aug 14, 2011
Submitted by: Todd Boland
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Feb 04, 2023
Observation date: Aug 14, 2011
Submitted by: Todd Boland
Region: Newfoundland and Labrador, Canada
Verified by: jmgesell
Verified date: Feb 04, 2023
Observation date: Aug 19, 2022
Submitted by: J_Martineau
Region:
Verified by: J_Martineau
Verified date: Jan 05, 2023
Observation date: Aug 01, 2021
Submitted by: NikkiM
Region: Park County, Wyoming, United States
Verified by: J_Martineau
Verified date: Oct 18, 2022
Observation date: Jul 06, 2019
Submitted by: Liz Osborn
Region: British Columbia, Canada
Verified by: Paul Prappas
Verified date: Sep 14, 2022
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