The aphid Myzus persicae Sulz. overwintered successfully on an almond‐peach hybrid for three consecutive years. Experiments provided no evidence in favour of the theory that the olfactory sense is used by aphids to find their host, nor were flying aphids attracted to other M. persicae or to honeydew on the host. Having found their host, presumably by chance, alate gynoparae tended to associate in groups.
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L. Broadbent (1949) studied this question.
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