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Gut morphology of Sirex noctilio larva. (A) The digestive tract includes foregut (FG), midgut (MG), and hindgut (HG). Enlarged images of (B) Crop (Cr), (C) Malpighian tubules (Mt), and (D) Anus (An) and Tail needle (Tn). Photographs were taken using Leica M205FA, United States.
