Catocala piatrix

Grote, 1864
Penitent Underwing

Sort #: 2286 | P #: 930762 | MPG #: 8771 | PFG Page #: 336
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Larval substrate: Deciduous trees, incl. Fraxinus (Ash), Carya (Hickory), Juglans (Walnut)
Phenology: Adult: 7/13 to 10/08 (81 records)

Status in MA (automated assessment): Fairly widespread, uncommon
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1871
Last Year Reported: 2026

Distribution by County: Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes
Number of Records: 103