SummaryA detailed study of the morphology and biology of all stages in the life cycle of Notocelia uddmanniana L. has been made over a period of 2 1/2 years.This tortricid is a pest of loganberry in certain fruit‐growing areas.The widths of the head capsules in all larval instars have been measured and found to follow Dyar's Law.In the East Mailing district an ichneumonid, Omorgus mutabilis H.Gr., parasitizes 35–50 % of the larvae. A few specimens of an undescribed species of Apanteles have been bred from larvae, and also a tachinid fly, Nenwrilla notabilis Mg.Preliminary control measures have given poor results.
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