Conifer Sawfly

Description:

Part of the larva's secret is its digestive system. It separates the poisonous oils in the pine needles from the nutritious pulp. Then it regurgitates the poisonous oils and stores them in two special sacs in its mouth. These sacs are lined with a chitinous material that protects the rest of the mouth from the acidic, poisonous oils. When threatened by a spider or even a bird, the sawfly releases some of this bad smelling oil in the direction of the threat. This strategy effectively convinces most aggressors to seek a meal somewhere else.