ASH SPIDER MITES
Tetranychus homorus


Ash spider mite webbing and mites (red).

The ash spider mites feed on the leaves during the summer apparently doing little damage and then move to the trunk to overwinter.  This webbing is not a common sight anywhere although the mites are reported to live throughout the United States. Cooler summers and rain may keep the phenomenon from occurring most years.

Ash spider mite webbing and mites (red).

Photos: Strong, ME August 2010

MAINE DEPARTMENT OF AGRICULTURE, CONSERVATION AND FORESTRY
Maine Forest Service - Forest Health and Monitoring Division
August 2010