Scudder's Sulphur
Common NameScudder's Sulphur
Scientific NameColias scudderii
FamilyPieridae
SubfamilyColiadinae
Wingspan (mm)38
Primary Colorspale yellow, greenish-white, pink
HabitatAlpine meadows, subalpine forests, open woodlands, bogs, fens
Geographic RangeWestern North America (Alaska, Yukon, British Columbia, Alberta, Montana, Wyoming, Colorado, Utah, New Mexico)
Host Plantswillow
Flight PeriodMid-July to early September
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on willow leaves. Larvae are green with a white stripe and overwinter before pupating. Pupae are typically green.
Identification TipsLook for the distinctive pale greenish-yellow to whitish underside, the bright pink wing fringes, and the small pink discal spot on the hindwing. Males typically have yellow uppersides, while females can be yellow or white.
Description
A medium-sized sulphur butterfly with pale greenish-yellow to whitish undersides, prominent pink wing fringes, and a small pink discal spot on the hindwing.
