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Quarterly Journal of Microscopical Science, Vol s3-104, 227-241, Copyright © 1963 by Company of Biologists
1 Department of Zoology and Comparative Physiology, The University, Birmingham, 15
The peripheral nervous system in the Phormia larva consists of bipolar neurones that end in specialized sensilla, and bipolar or multipolar neurones with ramifying distal processes. The former are associated with the cuticular sensilla and chordotonal organs. The latter (a) constitute a sub-epidermal nerve-plexus with processes that occasionally run over skeletal muscles, (b) innervate specifically orientated strands of connective tissue, the longitudinal, vertical, and ventral stretch receptors, and (c) innervate the tracheal epithelium, imaginal buds and associated pedicels, and the nerve-sheaths.