Description of Larvae of Anastrepha amplidentata and Anastrepha durantae with Review of Larval Morphology of the Fraterculus Group (Diptera: Tephritidae)

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We describe and illustrate for the first time the third instars of Anastrepha amplidentata Norrbom and Anastrepha durantae Norrbom from Peru. Morphological structures such as the facial mask, cephaloskeleton, and spiracles are described using optical and scanning electron microscopy. A summary of comparative measurements of larvae of the eleven previously described species within the fraterculus group is provided. We discuss morphological characters that can be used to distinguish species within the fraterculus group, such as oral ridges, accessory plates, mouthhook, prothoracic spiracles, dorsal spinules, posterior spiracles, and anal lobes.