Corn: Sap Beetles (Glischrochilus quadrisignatus)

Pub 812: Field Crop Protection Guide > Chapter 1: Corn > Sap Beetles

Field Crop Protection Guide 2011-2012, Order 2011-2012 publication

Table of Contents

  1. Description
  2. Integrated Pest Management Options
  3. Related Links...


Description

Adult sap beetles, also known as picnic beetles, are 4 mm (approximately 1/6 in.) in length, dark brown to black with two pale yellow spots on each wing cover.

Image 1. Sap beetles feeding on bruised corn ear. Also known as picnic beetles. Do not cause the primary damage.
Image 1. Sap beetles feeding on bruised corn ear. Also known as picnic beetles. Do not cause the primary damage.

Integrated Pest Management Options

Not an economic pest but can carry Fusarium. Chemical control is not recommended.

Related Links...


For more information:
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E-mail: ag.info.omafra@ontario.ca
Author: OMAFRA Staff
Creation Date: 2 May 2011
Last Reviewed: 6 May 2011