This post was written by Isabella Messer, an undergraduate working in the Garden Ecology Lab.

The Gray Hairstreak (Strymon melinus(Hübner, 1818)) is a common butterfly in the US. Its habitat spans most of the country with the exception of some states in the midwest (1). The Gray Hairstreak is most common in the southeast but can also be found along the west coast, including Oregon and possibly some of your gardens (1). These butterflies can be identified by their ash-gray color of their wings, their noticeable white-bordered black median line, and a two orange patches on the outer angle of their hindwing (2). Due to their coloring, Gray Hairstreaks can be mistaken for an Eastern Tailed-Blue butterfly which also have orange spots on their hindwing s(3). However, the Eastern Tailed-Blue does not live in Oregon (4). If you want to attract more Gray Hairstreaks to your garden, it would be beneficial to plant  goldenrod, mint, milkweed and winter cress (5). Keep an eye out on a sunny day for these sweet little beauties!

Gray Hairstreak in a Portland garden, August 2017

References

  1. “Species Strymon Melinus – Gray Hairstreak – Hodges#4336.” Species Strymon Melinus – Gray Hairstreak – Hodges#4336 – BugGuide.Net, Metalmark Web & Data, 2017, bugguide.net/node/view/579.
  2. Rodriguez, Lauren. “Gray Hairstreak – Strymon Melinus – Details.” Encyclopedia of Life, Encyclopedia of Life, 27 Apr. 2013, eol.org/pages/262409/details.
  3. Cook, Will. “Gray Hairstreak (Strymon Melinus).” Gray Hairstreak (Strymon Melinus), Carolina Nature, 7 Nov. 2015, www.carolinanature.com/butterflies/grayhairstreak.html.
  4. “Eastern Tailed-Blue Cupido Comyntas (Godart, [1824]).” Butterflies and Moths of North America, Metalmark Web & Data, 18 Aug. 2017, www.butterfliesandmoths.org/species/Cupido-comyntas.
  5. Bartlet, Troy. “Species Strymon Melinus – Gray Hairstreak – Hodges#4336.” Bug Guide, Iowa State University Department of Entomology, 18 Apr. 2017, bugguide.net/node/view/579.

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