Subject: What is it?
Location: Thunder Bay Ontario Canada
August 9, 2017 6:28 pm
Hi just curious on these 2 types of caterpillars found
Signature: Colin Burridge
Our research on BugGuide indicates this is a Columbia Silkmoth Caterpillar, Hyalophora columbia columbia, which is the north eastern subspecies. According to BugGuide: “In eastern North America [ssp. columbia], the preferred food of larvae is Tamarack (American Larch – Larix laricina).”