Butterflies and Moths of North America

collecting and sharing data about Lepidoptera

  Sighting 1130119

Ceanothus silkmoth
Hyalophora euryalus

Observation date: July 26, 2017
Submitted by: thousandthjill
Specimen type: Photograph
Observation notes: Columbia silkmoth seemed to be the best match from photo gallery. Only historic records from our area! The caterpillar was feeding on bitterbrush (Purshia tridentata). Since the first sighting on 7/26, the caterpillar has remained in the same area. As of 7/29, it has moved down into a mix of small western juniper and bitterbrush and is weaving a cocoon.
Status: Resident
Verified by: davidwdroppers
Verified date: March 28, 2021
Coordinator notes: ID based on bitterbrush being a favorite host plant in the region and far more records of euryalus from that area. H. gloveri/columbia may be found rarely there, but I have no clues about distinguishing larvae
Checklist region(s): United States, Oregon, Crook County