Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1385739

Observation date: July 06, 2024
Submitted by: Tom Dudones
Specimen type: Photograph
Observation notes: photo #1 - Note the much smaller size of the Canadian Tiger Swallowtail (left), compared to the much larger Eastern/hybrid? Tiger Swallowtail (right). This is the first time I have seen both species/forms together where size can be compared. photo #2- Note the much larger size of the Eastern Tiger Swallowtail (left), compared to the much smaller Canadian Tiger Swallowtail (right). photo #3- The much larger Eastern/hybrid Tiger Swallowtail on the left, screens all but part of the forewings of the smaller Canadian. A second Eastern/hybrid Tiger Swallowtail is seen right.
Status: Resident
Verified by: jmgesell
Verified date: July 09, 2024
Coordinator notes: Good photos and definitely interesting. It's difficult to tell if the size difference is due to a different species, and it would be odd to see a pretty fresh Canadian this time of year. I'll label this as likely the proposed "Midsummer Tiger," which appears after the flight of the Canadian and shares mixed characteristics of both species but is not a true hybrid. Since there is no official designation as of yet, it is still labeled as canadensis x glaucus at this time on both BAMONA and iNat. -jmgesell
Checklist region(s): United States, New York, Essex County