PTEROTHORACIC MUSCULATURE OF THE ADULT MALE SPRUCE BUDWORM,CHORISTONEURA FUMIFERANA(LEPIDOPTERA: TORTRICIDAE)

Abstract
The musculature of the pterothorax of the adult maleChoristoneura fumiferana(Clem.) is described in detail and the arrangement of muscles is shown to correspond closely to other lepidopterans. A comparison with the general plan of the alate segment is also attempted.