Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1354555

Ilia Underwing
Catocala ilia

Observation date: April 23, 2023
Submitted by: ButterflyBrad
Specimen type: Photograph
Observation notes: Top - looks just like an old twig with fungus. Belly - purple hue. Feisty when touched, back and forth body (mostly front half) movements. 36 degrees when found. Approximately 2-2 1/2 inches.
Status: Resident
Verified by: BarbSendelbach
Verified date: March 26, 2025
Coordinator notes: Nice find! They feed on various oaks. Not seen all that often. I'm guessing it was heading off to find a place to pupate.
Checklist region(s): United States, Arkansas, Benton County