Butterfly flight seasons in Missouri from 66,500 research-grade iNaturalist observations. September has the most activity.
By month
Missouri butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in Missouri
Monarch
Eastern Tiger Swallowtail
Common Buckeye
Great Spangled Fritillary
Pipevine Swallowtail
Silver-spotted Skipper
Eastern Tailed-Blue
Pearl Crescent
Spicebush Swallowtail
Hackberry Emperor
Huron Skipper
Black Swallowtail
Painted Lady
Fiery Skipper
Red Admiral
Zebra Swallowtail
