Orange Sulphur
Common NameOrange Sulphur
Scientific NameColias eurytheme
FamilyPieridae
SubfamilyColiadinae
Wingspan (mm)35
Wing Patternsolid
Primary Colorsyellow, orange
HabitatMeadows, alfalfa fields, clover fields, open disturbed areas, roadsides
Geographic RangeNorth America (widespread across the United States, southern Canada, and parts of Mexico)
Host Plantsalfalfa, clover, vetch, peas, other legumes
Flight PeriodMarch to November (multiple broods, varies by region)
Conservation Statusleast-concern
Lifecycle NotesEggs are laid singly on host plant leaves. Larvae are green with a white stripe along the side. Pupation occurs in a green chrysalis, often attached to the host plant stem. Multiple generations occur annually.
Identification TipsLook for the overall yellow or orange coloration, the black forewing spot, and the reddish-brown ringed discal spot on the hindwing underside. Males often have a black border on the forewing, while females may be yellow or white (alba form).
Description
A medium-sized butterfly, typically bright yellow or orange, with a distinct black spot on the forewing and a reddish-brown discal spot on the hindwing underside. Females can also be white.
