 In spruce-fir forests throughout Maine, the late-instar spruce budworm larvae is preyed on by eumenid wasps such as the "A. adiabatus", and "E. leucomelas".This predation is important in controlling populations of the spruce budworm in forest stands.Spruce budworm larvae are attacked by parasitoids from the Hymenoptera and Diptera orders, which include common wasps such as "Apanteles fumiferanae" and "Glypta fumiferanae".