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See Moth submissions from National Moth Week 2023

Photos of insects and people from the 2022 BugGuide gathering in New Mexico, July 20-24

Photos of insects and people from the Spring 2021 gathering in Louisiana, April 28-May 2

Photos of insects and people from the 2019 gathering in Louisiana, July 25-27

Photos of insects and people from the 2018 gathering in Virginia, July 27-29

Photos of insects and people from the 2015 gathering in Wisconsin, July 10-12


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Genus Colias

Orange Sulphur for California in October - Colias eurytheme Clouded Sulphur (Male?) - Colias philodice pierid - Colias eurytheme Yellow Butterfles in Alfalfa Fields - Colias philodice - female Colias eurytheme - male Sulfur  - Colias eurytheme Labrador Sulphur - Colias nastes Colias christina krauthi - Colias christina - male
Show images of: caterpillars · adults · both
Classification
Kingdom Animalia (Animals)
Phylum Arthropoda (Arthropods)
Subphylum Hexapoda (Hexapods)
Class Insecta (Insects)
Order Lepidoptera (Butterflies and Moths)
Superfamily Papilionoidea (Butterflies and Skippers)
Family Pieridae (Whites, Sulphurs, Yellows)
Subfamily Coliadinae (Sulphurs and Yellows)
Genus Colias
Remarks
All Colias species are migratory in behaviour. Some simply move up and down mountainsides as the seasons advance, to take advantage of fresh growth of their larval foodplants and adult nectar sources. Others undertake much longer migrations.
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