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-1b -- Subgroups: Body wall smooth, except monarch butterfly - Species in group B-1a have a smooth body wall that is not extended into bumps, warts, tubercles, or horns. As an exception note the caterpillar of the monarch butterfly has four long filamentous tubercles.

No distinct markings - Species in this subgroup lack distinct markings. If markings are present they are usually faint, more or less uniformly colored, or evenly patterned.

Previous Section -- Spots, or streaks, or reticulated
Return to Photo Key to Species in Group B-1b

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/pht83-91.htm
Page Contact Information: Webmaster
Page Last Modified: Thursday, 03-Aug-2006 11:39:25 EDT
Sioux Falls, SD [sdww55]