Martel, P. 1972 Le malathion et le dimethoate dans la lutte contre la cochenille du pin, Phenacaspis pinifoliae (Fitch) (Homoptera: Diaspididae). [Malathion and dimethoate in control of pine needle scale, Phenacaspis pinifoliae (Fitch) (Homoptera, Diaspididae)].. Annales de la Société Entomologique de Quebec 7(1): 20-23.

Notes: Seasonal populations of P. pinifoliae on mugho pines was reduced by 99.5% after a single application of malathion.