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Western poplar clearwing
Parathene robiniae, the western poplar clearwing
can be found on occasion attacking aspens and poplars in nursery systems.
The clearwing moths emerge from host plants in summer. The wasplike moths
fly to trees where they lay eggs singly in bark crevices often near wounds.
The larvae that hatch from these eggs move to a feeding site and begin
to eat their way into the phloem and cambium and later form galleries
in the wood. It takes two seasons for the larvae to reach maturity and
exit from the trees.
Damage is generally found in trunks and larger branches.
Sap oozes from wounds and granular frass can be seen.
Forest
Pests of North America: Western poplar clearwing
Clearwing
Moth Management Guidelines from UC IPM Online has good information
for a variety of clearwing moths including a list of pheromone suppliers.
Another local pheromone supplier not included in the
list above is Advanced Pheromone Technologies. This is a link to their
technical guide for trapping sequoia
pitch moth.
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