Based on 1,581 research-grade iNaturalist observations in Indiana, Spicebush Swallowtail is most often recorded in July; in Indiana it behaves like a summer visitor / breeder. It ranks #9 among butterflies recorded in the state in our data.
Papilio troilus
Spicebush Swallowtail in Indiana by month
Bars show research-grade observations per month. They mix true seasonality with how often people are outdoors, so treat small numbers with caution.
Also seen in Indiana in July
Eastern Tiger Swallowtail
Monarch
Silver-spotted Skipper
Red Admiral
Small White
Pipevine Swallowtail
Black Swallowtail
Zabulon Skipper
Places to look in Indiana
State ParkTurkey Run State Park
State ParkBrown County State Park
State ParkProphetstown State Park
National ForestHoosier National Forest
State ParkMounds State Park
State ParkFalls of the Ohio State Park
FAQ
When does Spicebush Swallowtail appear in Indiana?
Mainly July–August, with the most records in July.
How common is Spicebush Swallowtail in Indiana?
It ranks #9 by number of iNaturalist observations among butterflies in Indiana (1,581 records in our sample).