Acadian Hairstreak
Satyrium acadica (W.H. Edwards, 1862)
Family: Lycaenidae
Subfamily: Theclinae
Identification: One tail on each hindwing. Upperside brown-gray. Underside of hindwing gray; blue marginal spot is capped with orange; row of orange submarginal spots capped with black; round black spots form postmedian row.
Wing Span: 1 1/8 - 1 1/2 inches (2.9 - 3.8 cm).
Life History: Males perch on low vegetation near host plants to watch for females. Eggs are laid on twigs and hatch the next spring; caterpillars eat leaves.
Flight: One flight from June-August.
Caterpillar Hosts: Various willow species including black willow (Salix nigra) and silk willow (Salix sericea).
Adult Food: Nectar from flowers including butterflyweed, meadowsweet, milkweeds, New Jersey tea, and thistles.
Habitat: Willow-lined streams, marshes, moist woodlands.
Range: British Columbia east to Nova Scotia; south to Idaho, Colorado, the upper Midwest, Maryland, and New Jersey.
Conservation: Not usually required.
NCGR: G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
Alternate Scientific Names:
Satyrium acadicum
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Verified Sightings
Displaying 1 - 24 of 863 verified sightings
Observation date: Jun 24, 2024
Submitted by: Ed Rothwell
Region: Montcalm County, Michigan, United States
Verified by: elsner
Verified date: Feb 27, 2025
Observation date: Jun 08, 2024
Submitted by: MLDelfino
Region: Cuyahoga County, Ohio, United States
Verified by: rogerdowner
Verified date: Jun 13, 2024
Observation date: Jul 05, 2023
Submitted by: beastbreath
Region: Gratiot County, Michigan, United States
Verified by: elsner
Verified date: Jul 16, 2023
Observation date: Jun 28, 2023
Submitted by: Pheasantboy77
Region: Lyon County, Minnesota, United States
Verified by: jmgesell
Verified date: Jul 01, 2023
Observation date: Aug 04, 2022
Submitted by: rbuist
Region: Manitoba, Canada
Verified by: chalicerae
Verified date: Mar 20, 2023
Observation date: Jul 14, 2022
Submitted by: jvkopple2
Region: Kalkaska County, Michigan, United States
Verified by: jwileyrains
Verified date: Aug 30, 2022
Observation date: Jun 26, 2022
Submitted by: pporonto
Region: Macomb County, Michigan, United States
Verified by: jwileyrains
Verified date: Aug 30, 2022
Observation date: Jul 27, 2022
Submitted by: dave mcelveen
Region: Koochiching County, Minnesota, United States
Verified by: jmgesell
Verified date: Aug 01, 2022
Observation date: Jun 29, 2022
Submitted by: mbroen
Region: St. Croix County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jul 20, 2022
Observation date: Jul 13, 2022
Submitted by: pgrew1@unl.edu
Region: Penobscot County, Maine, United States
Verified by: John Calhoun
Verified date: Jul 17, 2022
Observation date: Jul 22, 2018
Submitted by: johanncousinard
Region: Quebec, Canada
Verified by: jmgesell
Verified date: Apr 04, 2022
Observation date: Jul 08, 2021
Submitted by: Nickajacket
Region: Cherry County, Nebraska, United States
Verified by: Emily Geest
Verified date: Sep 27, 2021
Observation date: Jul 02, 2021
Submitted by: jim8435wisc
Region: Columbia County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Sep 20, 2021
Observation date: Jul 11, 2021
Submitted by: Chris Blomme
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jul 16, 2021
Observation date: Jul 10, 2021
Submitted by: rapids
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jul 11, 2021
Observation date: Jul 04, 2021
Submitted by: Rickyd76
Region: Stanley County, South Dakota, United States
Verified by: J_Martineau
Verified date: Jul 11, 2021
Observation date: Jun 29, 2021
Submitted by: Birderbobt51
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jun 30, 2021
Observation date: Jun 28, 2021
Submitted by: beastbreath
Region: Ingham County, Michigan, United States
Verified by: rosslayberry
Verified date: Jun 29, 2021
Observation date: Jun 24, 2021
Submitted by: Ed Rothwell
Region: Washtenaw County, Michigan, United States
Verified by: rosslayberry
Verified date: Jun 25, 2021
Observation date: Jul 03, 2020
Submitted by: terrymortier
Region: Burnett County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Mar 27, 2021
Observation date: Jul 15, 2016
Submitted by: Dwaine Wagoner
Region: Natrona County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jan 18, 2021
Observation date: Jul 07, 2020
Submitted by: Dwaine Wagoner
Region: Natrona County, Wyoming, United States
Verified by: J_Martineau
Verified date: Jan 18, 2021
Observation date: Jul 12, 2020
Submitted by: Mark Plessner
Region: Lucas County, Ohio, United States
Verified by: rogerdowner
Verified date: Jul 14, 2020
Observation date: Jul 02, 2020
Submitted by: rapids
Region: Ontario, Canada
Verified by: rosslayberry
Verified date: Jul 02, 2020
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