description Clouded Sulphur Overview
The Clouded Sulphur is a North American butterfly with the scientific name Colias philodice. It is common across much of the continent and is frequently found in meadows, fields, roadsides, gardens, and other open habitats. Adults are usually yellow, although white forms also occur, and the wings have dark marginal markings. The larvae feed on plants in the pea family, including clovers and alfalfa.
help Clouded Sulphur FAQ
What is the scientific name of the Clouded Sulphur?
It is Colias philodice, a common North American butterfly in the family Pieridae. Adults can be yellow or pale white, especially among females.
Why are some Clouded Sulphurs white instead of yellow?
White forms are a normal color variation, not automatically a different species. Colias philodice females can appear pale or white, while many adults are yellow with darker wing markings.
Does the Clouded Sulphur occur in Canada?
Yes. Colias philodice is widespread across North America, including central and southeastern Canada, as well as meadows, fields, roadsides, and gardens.
What do Clouded Sulphur caterpillars eat?
Larvae use plants in the pea family, Fabaceae, including clovers, Trifolium, and alfalfa, Medicago sativa. Planting those host plants helps more than offering nectar alone because caterpillars need them for development.
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