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
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Verified Sightings
Displaying 49 - 72 of 859 verified sightings
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
Observation date: Jul 19, 2015
Submitted by: SkrentnyJeff
Region: Lake County, Illinois, United States
Verified by: rogerdowner
Verified date: Feb 21, 2016
Observation date: Jun 29, 2015
Submitted by: Allen Belden
Region: Page County, Virginia, United States
Verified by: richardhsmith
Verified date: Jul 17, 2015
Observation date: Jun 21, 2015
Submitted by: cblazo
Region: Franklin County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jun 27, 2015
Observation date: Jun 21, 2015
Submitted by: cblazo
Region: Franklin County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jun 27, 2015
Observation date: Jun 21, 2015
Submitted by: cblazo
Region: Franklin County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jun 27, 2015
Observation date: Jun 21, 2015
Submitted by: cblazo
Region: Franklin County, Pennsylvania, United States
Verified by: davidwright
Verified date: Jun 27, 2015
Observation date: Jul 02, 2014
Submitted by: richardhsmith (Rick Borchelt)
Region: Anne Arundel County, Maryland, United States
Verified by: richardhsmith
Verified date: Jan 28, 2015
Observation date: Aug 10, 2014
Submitted by: aarongunnar
Region: Dunn County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Nov 20, 2014
Observation date: Jul 30, 2014
Submitted by: abartels
Region: Menominee County, Michigan, United States
Verified by: rosslayberry
Verified date: Aug 11, 2014
Observation date: Jul 10, 2014
Submitted by: jim8435wisc
Region: Monroe County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jul 17, 2014
Observation date: Jul 01, 2014
Submitted by: jim8435wisc
Region: Columbia County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Jul 17, 2014
Observation date: Jul 05, 2014
Submitted by: treichard
Region: Sussex County, New Jersey, United States
Verified by: Will Kerling
Verified date: Jul 14, 2014
Observation date: Jun 29, 2014
Submitted by: BarbSendelbach
Region: Sussex County, New Jersey, United States
Verified by: Will Kerling
Verified date: Jul 04, 2014
Observation date: Jun 27, 2014
Submitted by: mdrake
Region: Cumberland County, New Jersey, United States
Verified by: Will Kerling
Verified date: Jun 29, 2014
Observation date: Jun 16, 2014
Submitted by: bjones7777
Region: Rutherford County, Tennessee, United States
Verified by: dbruce
Verified date: Jun 18, 2014
Observation date: Jul 11, 2013
Submitted by: jim8435wisc
Region: Jackson County, Wisconsin, United States
Verified by: Tom Middagh
Verified date: Sep 19, 2013
Observation date: Jun 26, 2013
Submitted by: rdhealy1951@aol.com
Region: Hardin County, Kentucky, United States
Verified by: rogerdowner
Verified date: Jul 17, 2013
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