Edwards' Hairstreak
Satyrium edwardsii (Grote and Robinson, 1867)
Family: Lycaenidae
Subfamily: Theclinae
Identification: One tail on the hindwing. Underside of hindwing pale brown, with postmedian band of dark brown oval spots; blue tail-spot not topped with orange.
Wing Span: 1 1/8 - 1 1/2 inches (3 - 3.8 cm).
Life History: Males perch on trees to watch for females. Eggs are laid in bark crevices of young hosts. Young caterpillars eat buds during the day. Older caterpillars eat leaves at night and hide during the day in ant nests at the base of the host tree. In return for protection, the ants feed on honeydew produced by the caterpillars.
Flight: One flight from June-July in the north, May-July in the south.
Caterpillar Hosts: Scrub oak (Quercus ilicifolia) and occasionally black oak (Q. velutina).
Adult Food: Nectar from various flowers including dogbane, goldenrod, meadowsweet, milkweeds, New Jersey tea, staghorn sumac, and white sweet clover.
Habitat: Oak thickets in rocky open habitats including sand barrens, shale barrens, and limestone ridges.
Range: Eastern United States from southern Canada and southern Maine south to northeast Texas, central Missouri, and northern Georgia.
Conservation: Not usually required.
NCGR: G4 - Apparently secure globally, though it might be quite rare in parts of its range, especially at the periphery.
Management Needs: None reported.
Comments: NULL
Verified Sightings
Displaying 1 - 24 of 827 verified sightings
Observation date: Jun 28, 2020
Submitted by: BrierHouseFarm
Region: Fountain County, Indiana, United States
Verified by: Howell_Curtis
Verified date: Jun 29, 2020
Observation date: Jul 07, 2010
Submitted by: rbuist
Region: Manitoba, Canada
Verified by: chalicerae
Verified date: Jun 17, 2020
Observation date: Jul 26, 2019
Submitted by: Ed Rothwell
Region: Newaygo County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 31, 2019
Observation date: Jul 26, 2019
Submitted by: Ed Rothwell
Region: Newaygo County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 31, 2019
Observation date: Jul 14, 2019
Submitted by: Mark Plessner
Region: Lucas County, Ohio, United States
Verified by: rogerdowner
Verified date: Jul 16, 2019
Observation date: Jul 07, 2019
Submitted by: Kzfisherman
Region: Kankakee County, Illinois, United States
Verified by: rogerdowner
Verified date: Jul 16, 2019
Observation date: Jul 14, 2018
Submitted by: Ssneed
Region: Grand Traverse County, Michigan, United States
Verified by: rosslayberry
Verified date: Jul 14, 2019
Observation date: Jul 03, 2019
Submitted by: Melanie Mack
Region: Lackawanna County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jul 05, 2019
Observation date: Jul 14, 2016
Submitted by: sansue
Region: Manitoba, Canada
Verified by: chalicerae
Verified date: Apr 23, 2019
Observation date: May 21, 2011
Submitted by: Pierre Howard
Region: Georgia, Taylor County, United States
Verified by: Mikelchap
Verified date: Dec 01, 2018
Observation date: May 29, 2011
Submitted by: Dennis Forsythe (Mark Vukovich)
Region: Aiken County, South Carolina, United States
Verified by: Dennis Forsythe
Verified date: Nov 05, 2018
Observation date: Jun 23, 2018
Submitted by: Kzfisherman
Region: McHenry County, Illinois, United States
Verified by: rogerdowner
Verified date: Sep 04, 2018
Observation date: Jun 20, 2018
Submitted by: Nathan R Mast
Region: Coshocton County, Ohio, United States
Verified by: rogerdowner
Verified date: Aug 25, 2018
Observation date: Jul 02, 2018
Submitted by: ncrosbyrd
Region: Columbia County, Wisconsin, United States
Verified by: BGilley
Verified date: Aug 23, 2018
Observation date: Jun 22, 2015
Submitted by: JoseBonner
Region: Monroe County, Indiana, United States
Verified by: Howell_Curtis
Verified date: May 27, 2018
Observation date: Jul 06, 2015
Submitted by: crx2aj3
Region: Albany County, New York, United States
Verified by: rosslayberry
Verified date: Dec 01, 2017
Observation date: Jul 03, 2017
Submitted by: cyric
Region: Washington County, Rhode Island, United States
Verified by: sharonstichter2
Verified date: Jul 27, 2017
Observation date: Jun 25, 2017
Submitted by: cblazo
Region: Pennsylvania, United States
Verified by: davidwright
Verified date: Jun 25, 2017
Observation date: Jul 17, 2014
Submitted by: jandrusz
Region: Beaver Island County, Michigan, United States
Verified by: elsner
Verified date: Apr 13, 2017
Observation date: Jul 17, 2016
Submitted by: tom howe
Region: Hubbard County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Nov 23, 2016
Observation date: Jul 22, 2016
Submitted by: aarongunnar
Region: Dunn County, Wisconsin, United States
Verified by: BGilley
Verified date: Sep 25, 2016
Observation date: Jul 13, 2016
Submitted by: dpgbfly1
Region: Isanti County, Minnesota, United States
Verified by: Tom Middagh
Verified date: Aug 19, 2016
Observation date: Jul 19, 2015
Submitted by: SkrentnyJeff
Region: Lake County, Illinois, United States
Verified by: rogerdowner
Verified date: Feb 21, 2016