Catocala ilia

(Cramer, 1775)
Ilia Underwing

Sort #: 2310 | P #: 930792 | MPG #: 8801 | PFG Page #: 344
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Larval feeding type: Feeds externally on leaves
Larval substrate: Quercus alba* (White Oak)
Phenology: Adult: 6/27 to 10/26 (527 records)

Status in MA (automated assessment): Widespread, very common
Status in N. America: Native
MA Endangered Species Act status: None
First Year Reported: 1880
Last Year Reported: 2026

Distribution by County: Berkshire, Hampden, Hampshire, Franklin, Worcester, Middlesex, Essex, Suffolk, Norfolk, Bristol, Plymouth, Barnstable, Dukes, Nantucket
Number of Records: 796