oa Journal of the Entomological Society of Southern Africa - Experiments on terminating the diapause in larvae of codling moth
It has long been known that the codling moth (Carpocapsa pomonella L. Lepidoptera: Olethreutidae) hibernates as a larva within the cocoon during the winter months. From observations of Pettey (1916) and unpublished data of this Institute, it is clear that, with the exception of a few late pupae in March and a few early pupae in August, no codling moth pupae occur in pear and apple orchards in the Western Cape Province during the six months from the beginning of March to the end of August. In the case of apricot orchards, where the pest is predominantly one-brooded (Pettey, 1925, Pettey and Joubert, 1926) pupae may be absent for a period of nine to ten months.
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