Schoen, L., & Martin, C. 1999 Une "nouvelle" cochenille sur tomate. Pseudococcus viburni, ravageur potentiel en serre. [A "new" type of scale on tomatoes. Pseudococcus viburni, a potential greenhouse pest.]. Phytoma No. 514, 39-40.
Notes: P. viburni, a floury scale first introduced into the Netherlands in 1990, has caused a great deal of damage since 1995. It was first reported in France in 1997, in Brittany and Roussillon. P. viburni can survive outside in tropical and Mediterranean areas, and also in greenhouses. P. viburni is spread via plant matter, but is also carried by humans and animals. It has a waxy protective shield and is able to survive for long periods in greenhouse structural material and heating elements. P. viburni is difficult to control chemically. Rigorous preventive treatment is therefore required. If such treatment fails, repeated chemical treatments should be applied. Two potential biological control agents, the predator Cryptolaemus montrouzieri and the parasitoid Leptomastix epona, are currently being studied.