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Sawfly Larvae - Garden Insect Library - Saferbrand

Sawfly Larvae

 

Adult sawflies have two wings, so they are not true flies. They measure up to 1/2" in length. Larvae resemble caterpillars, although they have some "false legs."

 

Most sawflies seem to prefer older foliage. Larvae devour the needles of conifer trees. Tree branches may appear defoliated.

 

Images courtesy of Herbert A. "Joe" Pase III, Texas Forest Service, Bugwood.org.

 

 

 

 

So... What's a Conifer Sawfly?

Adult sawflies have two wings, so they are not true flies. They measure up to 1/2" in length.

 

Larvae resemble caterpillars, although they have some "false legs."

 

Larvae may have a grayish body with lighter striping or they may have a yellowish or whitish body with dark spots along the length of its body.

 

 

 

 

Reproduction Patterns of Conifer Sawflies

Conifer sawfly eggs spend the winter inside gaps in pine tree branches. When they hatch in the early part of spring, the larvae begin to feed voraciously on the needles of the pine trees.

 

Conifer Sawfly

They then pupate in plant debris on the ground, maturing into adults by fall. The female adults will lay eggs which will then hatch in the spring.

 

Some sawflies lay eggs in the spring that will hatch into larvae which then pupate, spending the winter in cocoons.

 

 

 

 

Conifer Sawfly's Habitat

Conifer sawflies dwell in the eastern regions of the United States and Canada.  As the name implies, these pests prefer pine trees and can be particulary devastating to forest areas.

 

 

 

Images courtesy of Herbert A. "Joe" Pase III, Texas Forest Service, Bugwood.org.
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