Gothic Moth caterpillars?

Gothic Moth caterpillars?

Observation - Gothic Moth caterpillars?. Description: Eggs found on underside of Peppermint leaf in suburban garden. Kept in jar and fed on various garden leaves. Remained gragarious. Photos at 27 and 53 days from hatching. One local 'expert' suggested Gothic Moth

Eggs found on underside of Peppermint leaf in suburban garden. Kept in jar and fed on various garden leaves. Remained gragarious. Photos at 27 and 53 days from hatching.

One local 'expert' suggested Gothic Moth