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Quarterly Journal of Microscopical Science, Vol s3-98, 499-506, Copyright © 1957 by Company of Biologists

The Functional Anatomy of the Mid-gut of Larvae of the Ant, Myrmica

J. S. WEIR 1

1 Formerly Carnegie Research Student, Zoology Department, Glasgow University; Department of Zoology and Comparative Physiology, Birmingham University

The functional anatomy of the mid-gut of larvae of Myrmica rubra microgyna Brian and Brian is described.

Observations have been made on the modes of formation of the two distinct types of peritrophic membrane, which may correspond to the primary and secondary peritrophic membrane of Wigglesworth.

These membranes are highly developed independently and the hypothesis is advanced that they have different functions. Further, it is suggested that the corresponding structures in adult Apis do not represent, as advanced by earlier workers, an intermediate stage in the evolution of the peritrophic membrane, and in its mode of formation.






© The Company of Biologists Ltd 1957