The White M Hairstreak is a stunning hairstreak with iridescent royal blue upper wings and a distinctive white M or W mark on the underside of the hindwing. It inhabits mature oak forests and adults tend to perch in the treetops, making them a sought-after find when they descend to nectar. Males are sometimes seen mud-puddling.
Habitat
Mature oak forests and forest edges of the East
Diet
Larvae: oak foliage. Adults: nectar and moisture
How common
Uncommon
Recent White M Hairstreak sightings near you
Live, research-grade observations from iNaturalist. Allow location to center the map on you.
Spot a White M Hairstreak? Identify it instantly.
Point Huck at any plant or animal and get an instant ID, rarity, and field notes — building your personal nature collection as you go.
Get Huck — free