Observation notes: These caterpillars were feeding on Apocynum androsaemifolium. Location was Little Cherry Creek Ranch Rd, Grant County NM. Multiple instars were observed. I collected these caterpillars and raised two to adult. They have been identified by Clifford Ferris as E. gigantea, and he has the pinned specimens in his collect.
Verified by: kmortensen
Verified date: September 15, 2015
Coordinator notes: Wow! Thank you for adding your valuable photo of this rare species to our website!