White M Hairstreak
(Parrhasius m-album)
The White M Hairstreak is a rare stray in Wisconsin. This species strays north occasionally and has only been recorded from Door County in Wisconsin, one site in Michigan, and has not been recorded from Minnesota. Rare migrants such as the White M Hairstreak should be looked for along natural migration corridors such as along the Lake Michigan shore, or near the Mississippi and Wisconsin Rivers.
Identifying characteristics: Like many of the other Gossamer-wing butterflies, the White M Hairstreak rarely rests with its wings open, but during flight shows a very bright iridescent blue color. Underneath the White M Hairstreak has a large red spot near the tails, a white spot at the leading edge of the hindwing, and a white M as part of the postmedian band.
Similar species: None in Wisconsin.
Habitat: In their normal habitat, the White M Hairstreak is found mainly in Oak woodlands, and open brushy areas where Oaks abound.
Flight: Throughout most of their range this species is triple brooded.
Abundance: Any individual seen in Wisconsin will most likely be a single stray.
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White M Hairstreak
Parrhasius m-album