You Are Here: Management Updates 2005 Archive June 17, 2005

Date: June 17, 2005
Category: Insects
Subject: White Grubs

European chafers have been pupating and adults should start emerging in the next few days in many locations in eastern Massachusetts. Adults fly at dusk, often attracted to trees that are silhouetted against the setting sun. "Favorite" trees can harbor thousands of beetles. The European chafer is definitely on the move, and has been found up and down the Connecticut River Valley. (It has been well established in Berkshire County for several years.)

Oriental beetle grubs started pupating in southern New York last week, and grubs we have seen in southern New England have begun the process to eliminate all the excess food from their digestive systems in preparation for pupation. Often the grubs turn a golden brown during this "preparation" time.

Japanese beetle grubs will not be far behind. Most of them are done feeding now (hallelujah!), and will be pupating soon.

So now we just wait ... The rainfall patterns in the summer will play  major role in determining where the "hot spots" are this year.

Submitted by: Dr. Pat Vittum

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