Dead crowns in the canopy and rusty-colored branches are woven in with the otherwise healthy, green temperate rainforest. About a third of the trees around here were hit by the voracious sawfly. The larvae get mistaken for caterpillars. Adults are a kind of non-stinging wasp, a little smaller than a pinky finger.
A lot of people are complaining about the wasps this year. They are actually very beneficial insects in some ways. These are very beneficial insects. They gather other insects to feed their larvae and thus control aphid populations, take out delphinium defoliators and other leaf rollers.
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