Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1416137

St. Lawrence Tiger Moth
Platarctia parthenos

Observation date: October 12, 2025
Submitted by: JoAnnHallHkr
Specimen type: Photograph
Observation notes: Located at approximately 3800 feet descending Mt Tecumseh Trail off of Tripoli Rd in NH. Boreal forest. Temperature was 38 degrees with winds 20mph and gusts to 40mph. Caterpillar was on a granite rock, moving across the trail. Approximately 2in in length, dark brown coloring blending into light brown.
Status: Resident
Verified by: John Calhoun
Verified date: October 15, 2025
Coordinator notes: None.
Checklist region(s): United States, New Hampshire, Grafton County