Maple Petiole Borer
Tim Gibb, Insect Diagnostician, Department of
Entomology, Purdue University
Feeding damage by maple petiole borers
may be the cause of fallen maple leaves beneath your trees. Examination
of the petiole on fallen leaves should reveal a hollow hole. The
tiny larvae tunnel in the petioles, or leaf stems, causing them
to break from the blade of the leaf. The adult is a small, four-winged
wasp known as a sawfly. Maple petiole borer infestations are infrequent
and unpredictable and do not appear to harm tree health so insecticidal
control is not recommended.
Images courtesy of Mick and Connie
Hardy, Summitville, IN
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only for the state of Indiana.
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