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A box of Aphid Eliminator, Aphidoletes aphidimyza, a parasitic beneficial insect. The small, bright orange, slug-like larvae inject a toxin into aphids' leg joints to paralyze them and then suck out the aphid body contents through a hole bitten in the thorax. Larvae can consume aphids much larger than themselves and may kill many more aphids than they eat when aphid populations are high. A single larva grows up to 1/8 inch long and kills 4-65 aphids per day.