Delia florilega Zetterstedt A bean seed fly

This pest attacks French bean, runner bean, bulb and salad onions, and causes the same kind of damage as Delia platura (q.v.). The larvae are relatively slender-bodied, with a thin, semitransparent body wall, through which the pinkish gut contents are clearly visible; the mouthparts (cephalopharyngeal skeleton) are prominent and the head only partly retracted into the prothorax (cf. onion fly, D. antiqua, p. 197); the posterior papillae are also particularly prominent (cf. D. platura, p. 199).

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