USGS - science for a changing world

Northern Prairie Wildlife Research Center

  Home About NPWRC Our Science Staff Employment Contacts Common Questions About the Site

Macromoths of Northwest Forests and Woodlands

Hyalophora euryalus [Saturniidae]


JPG-Hyalophora euryalus

Wingspan 10.3 cm. Forewing is variable rose-red, purple-red or dark red-brown with a large white, comma-shaped reniform spot, white basal and postmedian lines, and a round black subapical spot; hindwing is similar with an extremely elongate reniform spot. This saturniid is common and widely distributed in the Pacific Northwest. Moths fly in spring. Caterpillars are generalist feeders on the foliage of flowering trees and shrubs, particularly snowbrush (Ceanothus velutinus) and bitterbrush (Purshia tridentata) and the foliage of some conifers, sometimes found on Douglas-fir (Pseudotsuga menziesii).

Similar species: Hyalophora gloveri hindwing with a short reniform spot and broader basal and postmedian lines, occurs in the Southwest, Great Basin and Rocky Mountains. Hybrid populations of H. euryalus and H. gloveri occur in the northern Rocky Mountains.


Previous Species -- Antheraea polyphemus
Return to Listing of Saturniidae

Accessibility FOIA Privacy Policies and Notices

Take Pride in America logo USA.gov logo U.S. Department of the Interior | U.S. Geological Survey
URL: http://www.npwrc.usgs.gov/resource/insects/macronw/235.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 05:21:54 EST
Sioux Falls, SD [sdww55]