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EENY583: Hydrilla leafcutter moth (unofficial common name) Parapoynx diminutalis Snellen (Insecta: Lepidoptera: Crambidae)

Figure 4. A late instar of Parapoynx diminutalis Snellen, feeding on hydrilla (left). Instars 2 through 7 are white, later instars begin to turn yellow closer to pupation (right). Branched gills are visible and help identify this species in the larval stage.

Credit: Lyle J. Buss, University of Florida.