Pink-edged Sulphur
Common NamePink-edged Sulphur
Scientific NameColias interior
FamilyPieridae
SubfamilyColiadinae
Wingspan (mm)40
Primary Colorsyellow, pink, brown
HabitatBoreal forests, open woodlands, clearings, bogs, heathlands
Geographic RangeAcross Canada, extending into northern US states (e.g., Maine, New Hampshire, Michigan, Wisconsin, Minnesota)
Host PlantsVaccinium spp. (blueberries, cranberries), Salix spp. (willow)
Flight PeriodLate June to early September (peak July-August)
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on host plant leaves. Larvae are green with a white stripe, overwintering before pupating in spring.
Identification TipsKey features include the bright yellow wings with a prominent pinkish-red fringe on all four wings, especially visible on the underside, and a single, dark-ringed spot on the hindwing underside.
Description
A medium-sized butterfly with bright yellow wings, characterized by a distinctive pinkish-red fringe along the wing margins and a small, dark-ringed central spot on the underside of the hindwing.
