Living With the Orange Sulfur

Orange Sulfur Butterfly

Orange Sulfur Butterfly

Like the cabbage white butterfly, the orange sulfur or alfalfa butterfly, Colias eurytheme, will fly until late autumn. The caterpillars feed on alfalfa, clover and other plants in the pea family that remain green long into the fall. They can be seen visiting fall flowers near agricultural areas.  The butterfly at left was in Prophetstown State Park.  Occasionally, large populations will occur and damage alfalfa fields, but caterpillars are susceptible to diseases and parasitoids which prevent populations from reaching damaging levels.

About jjneal

Jonathan Neal is an Associate Professor of Entomology at Purdue University and author of the textbook, Living With Insects (2010). This blog is a forum to communicate about the intersection of insects with people and policy. This is a personal blog. The opinions and materials posted here are those of the author and are in no way connected with those of my employer.
This entry was posted in by jjneal, Environment. Bookmark the permalink.

One Response to Living With the Orange Sulfur

  1. Pingback: Living With the Orange Sulfur | Living With Insects Blog

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