Pineapple scale (Diaspis bromeliae (Kerner)) distribution and seasonal history

Abstract

A survey conducted to ascertain the distribution of Diaspis bromeliae (Kerner) found that it was widely distributed
in south-eastern Queensland. Studies on its seasonal history at two sites near Nambour between June 1977 and
October 1978 showed that the percentage of living adult female scales was highest during June, September and
December 1977 and August 1978. Combined mortality from parasitism and predation averaged 40.7% and 37.8%
respectively, at the two sites studied.