Size
In US, wingspan 25-31 mm (nearctica.com)
In Canada, wingspan 18-22 mm (CBIF)
Identification
Adult: dark brown with curved line of small white spots extending from the costa of the forewing, and brown and white checkered fringes on both wings; beneath, hindwing and tip of forewing are gray, with slightly greenish tinge, most noticeable in fresh specimens; forewing spots are repeated on the underside and there is a faint chain of linked pale spots on the hindwing underside
Larva: pale green white with dark green dorsal stripe and white lateral stripes; head is dark brown with paler vertical stripes and bands (CBIF)
Range
eastern US (but absent from most of the coastal plain) and southeastern Canada to Manitoba (one record from Saskatchewan)
Habitat
wooded areas and wood edges
Season
adults fly from April to July in the south; May and June in the north
Food
larvae feed on Kentucky Blue Grass (Poa pratensis), Indian Grass (Sorghastrum nutans and S. secundum), and Indian Woodoats Grass (Chasmanthium [=Uniola] latifolia) - also called Spikegrass
adults nectar at viburnum, blackberry, honeysuckle, and lilac; also found at roadside puddles
Remarks
Apparently, northern specimens are considerably smaller than southern ones (see Size section above).
Internet References
pinned adult images plus description, distribution, biology, etc. (Butterflies & Skippers of North America, nearctica.com)
pinned adult image plus description, distribution, biology, etc. (Butterflies of Canada, CBIF)