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Pear Sawfly (Pear Slug, Cherry Sawfly)

pear sawfly

Hosts:  cherry

  Overwinters as a sawfly pupa in the soil.  Adults lay eggs on leaves in mid summer.  The larvae have a slug-like appearance and feed on the upper surface of the leaf epidermis.

  They cause a skeletonizing injury where membranous “windows” of leaf tissue remain in between leaf veins. 

  Watch for sawfly larvae starting in mid to late July.

Treatment Threshold:
   No threshold determined.

Degree Day Model:

Management Considerations:
  The larvae are often suppressed by insecticides applied for other pests.  Trees can tolerate low populations.