EPPO Platform
on PRAs

Recommendation for interceptions and findings of Parapoynx polydectalis (Lepidoptera: Crambidae), a species of moth whose caterpillars are aquatic


Potential distribution and impact

The native distribution of P. polydectalis suggests that they would be unable to survive outdoors in the UK. There are no recent reports of aquatic moths causing damage at aquatic nurseries and any damage that does occur is likely to be very localised. 

No statutory action is recommended because: The species is unlikely to establish outdoors. Impacts are likely to be very localized. The potential for spread is low


  • Parapoynx sp.


  • aquatic plants
  • Cabomba


Type File Size
Pest Risk Analysis Download 96,06kB

PRA Area

  • United Kingdom