Crop & Pest Report

Accessibility


| Share

Mystery Bug (07/12/18)

This insect was observed on sunflower near the field edge. What is it?

Mystery Bug

This insect was observed on sunflower near the field edge. What is it?

This is the Argus tortoise beetle (Coleoptera: Chrysomelidae: Chelymorpha cassidea). Adults and larvae feed on leaves of milkweed and morning glory plants. Larvae are often seen carrying around their excrement on their backs, which serves as a protective shield against predators and parasitic wasps. They are seldom abundant enough to cause severe defoliation.

jan 6

 

Janet J. Knodel

Extension Entomologist

This site is supported in part by the Crop Protection and Pest Management Program [grant no. 2017-70006-27144/accession 1013592] from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed are those of the website author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

USDA logo

Creative Commons License
Feel free to use and share this content, but please do so under the conditions of our Creative Commons license and our Rules for Use. Thanks.