USGS - science for a changing world

Northern Prairie Wildlife Research Center

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

Caterpillars of Pacific Northwest
Forests and Woodlands

Photo Key to Species


Group B-1 -- Species in Group B-1 are grouped by the appearance of the body wall and color patterns. Most of these species are either Gelechiidae, Noctuidae, Notodontidae, Papilionidae, Plutellidae, Sphingidae, or Tortricidae. As an exception, note the caterpillar of the monarch butterfly has four long filamentous tubercles, see group B-1b.

Group B-1a -- Subgroups: Body wall with swellings - Species in group B-1a have the body wall extended into assymetrical swellings, short tubercles, small warts; or a horn on A8.


Return to Photo Key to Species
Next Section -- Group B-1b - Subgroups: Body wall smooth, except monarch butterfly

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/catnw/grpb1a.htm
Page Contact Information: Webmaster
Page Last Modified: Saturday, 02-Feb-2013 05:15:13 EST
Menlo Park, CA [caww55]