Edwards’ Hairstreak

Satyrium edwardsii

In open areas with many small oak trees available, this species will often be found perched in the open about three feet from the ground. If there is an abundance of nectar sources such as milkweed available, this species will often be found on these flowers. I have seen six individuals on a single Orange Milkweed plant.

In more mature woodlands, this species may be found perching high in the trees in a sunny spot, with the males defending their area and lashing out at any other butterfly that may flutter by. Battles with other Edwards’ Hairstreaks may spiral nearly out of sight, with the combatants returning and landing at nearly the same location.

Identifying characteristics

Below, the Edwards’ Hairstreak is brownish gray, with a row of darker ovals on the front wing, not connected into a band, and ringed with white. On the back wing, there is a row of submarginal orange crescents, not as prominent as in the Coral or Acadian Hairstreaks, interrupted by a blue spot not ringed with orange, and an obvious tail.

Similar species

This species is most likely to be confused with the Banded Hairstreak, as these species are found together and are of similar size and color. The Banded has a row of spots on the front wing that are rectangular, connected and not surrounded by white, and form a narrow band. The Edwards’ Hairstreak always has this row of separated spots, and each spot is surrounded by a white ring.

Habitat

Woodland edges, savanna, and hedgerows that contain a variety of oaks, the main host plant for this species.

Flight

One brood, late June and July and sometimes into early August.

Abundance

May become very common in oak savanna or oak woodlands, but does not congregate in large numbers. You are much more likely to see only two or three individuals in an area, but good nectar sources may attract a crowd.

Early Edwards’ Hairstreak Sightings

Date	County	Reported by
Jun 13, 2012	Sauk	Ann Thering
Jun 17, 2021	Sauk	Rich Kahl & Laurie Yahr
Jun 19, 2007	Sauk	Ann Thering
Jun 19, 2021	Dane	Ruth Smith
Jun 20, 2012	Columbia	Dan Sonnenberg

Locations