Butterfly flight seasons in Indiana from 46,033 research-grade iNaturalist observations. August has the most activity.
By month
Indiana butterfly calendar (top 40)
Fewer More observations (relative to each row's peak month)
Activity by month (all species)
Most-photographed butterflies in Indiana
Monarch
Eastern Tiger Swallowtail
Silver-spotted Skipper
Small White
Common Buckeye
Red Admiral
Painted Lady
Black Swallowtail
Spicebush Swallowtail
Pearl Crescent
Hackberry Emperor
Eastern Tailed-Blue
Zabulon Skipper
Peck's Skipper
Great Spangled Fritillary
Pipevine Swallowtail
