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WOOLLY ASH APHID

IPM

woolly ash aphid
PNWNurseryIPM    

Introduction

Biology

Damage

Biological Control

Chemical Control

References

Terminology

Acknowledgements

 

 

 

 

 

 

BIOLOGICAL CONTROL

Little is know about specific natural enemies associated with wooly ash aphid. Carver (1980) reports on a parasitic wasp, Aphelinus prociphili, of P. fraxinifolii (Riley) on ash in Iowa. Wu and Fang (1987) report of the importance of the predatory ladybeetle Callicaria superba Muls. The author's research has indicated there are a variety of natural enemies associated with this aphid. The natural enemy complex generally does not keep plant damage below an acceptable level in nursery production. The natural enemies we have seen associated with wooly ash aphid in Oregon are as follows:

  • sryphid flies

  • spiders

  • ladybeetles

  • parasitic wasps

sryphid fly egg
sryphid fly egg

spider
spider

parasitic wasp
parasitic wasp

 

Last modified - 7/22/02

 

Comments or questions? Contact Robin Rosetta

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