Biological control of the greenhouse whitefly Trialeurodes vaporariorum (Westwood) (Homoptera: Aleyrodidae) by Encarsia formosa Gahan (Hymenoptera: Aphelinidae) in Holland, an example

Scratchpads developed and conceived by (alphabetical): Ed Baker, Katherine Bouton Alice Heaton Dimitris Koureas, Laurence Livermore, Dave Roberts, Simon Rycroft, Ben Scott, Vince Smith