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On Braula coeca Nitsch and its affinities

Published online by Cambridge University Press:  06 April 2009

A. D. Imms
Affiliation:
Zoological Laboratory, Cambridge

Extract

The developmental stages of Braula coeca are described. The larva is an inquiline living in a tubular burrow which it makes by mining on the inner side of the capping of the honey cells in the comb of the hive bee. It is meta-pneustic and bears characteristic anterior and posterior girdles of sensoria.

The pupa is apparently unique among Cyclorrhapha in that it is enclosed within the unmodified cuticle of the 3rd instar larva, no puparium being formed. It is suggested that this feature is a degenerative change owing to the cessation of a particular phase of hormone activity.

The similarity of form and structure shown by the larvae of Braula and of the Chamaemyiidae (Ochthiphilidae) is indicative of a fundamentally close relationship. Their imagines on the other hand have undergone widely divergent evolution.

Type
Research Article
Copyright
Copyright © Cambridge University Press 1942

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