Seasonal development
and life cycle—California pear sawfly
The California pear sawfly overwinters as a pupa in the soil and adult wasps emerge in early spring.
After mating, females insert tiny white eggs singly into leaf tissue, commonly at leaf margins on leaves
in the lower part of the tree. Most eggs hatch by petal fall, and larvae immediately begin feeding on
leaf tissue. Larvae mature on leaves during April and May, drop to the ground, and pupate in the soil.
There is one generation a year; this insect is present on the trees only during spring months. | 
Larvae
mature on leaves
|
