The alimentary canal of Dendroctonus armandi Tsai and Li (Coleoptera: Curculionidae: Scolytinae)

The morphology and histology of the alimentary canal of the Chinese white pine beetle, Dendroctonus armandi Tsai and Li, were studied by means of light and electron microscopy. The general bauplan is described and illustrated in detail. Although many structures are found to be similar to those reported for other Dendroctonus Erichson species, some differences are apparent, such as the peritrophic membrane surrounding the food bolus, the absence of fine spines on the hindgut cuticle, and the presence of specialized proventricular plates.