Abstract
SUMMARYSurveys of oviparae of the apple‐grass aphid, Rhopalosiphum insertum(Wlk.), were made in southern England in each autumn from 1965 to 1976 inclusive. Resuhs varied considerably between years; greatest numbers were recorded in 1966 and 1969 and smallest numbers in 1972. The numbers of oviparae were compared with the numbers of gynoparae caught from mid‐September to the end of October in the traps operated by the Rothamsted Insect Survey. The correlation was sufficiently good for the latter to be used to forecast the hkely abundance of these aphids on fruit trusses in the following spring. The autumn surveys of oviparae were, therefore, discontinued. In Kent the numbers of oviparae were positively correlated with rainfall in the previous July and August.
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