Cephalic sensory pathways in the central nervous system of larval Manduca sexta (Lepidoptera: Sphingidae).

K. S. Kent, J. G. Hildebrand

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79 Scopus citations


Central projections of neurons innervating sensory structures on the head of larval Manduca sexta were traced by using methods of anterograde cobalt-diffusion. Regions of the deutocerebrum and tritocerebrum in the brain receive input from the antenna, labrum, maxilla, labial palps, hypopharynx and other unidentified regions of the buccal cavity. Antennal, maxillary and labial inputs project to the larval antennal centre (LAC) of the deutocerebrum. Stemmatal neurons and a few antennal neurons project into the protocerebrum. The suboesophageal ganglion (SEG) receives input from mechanosensory neurons in all parts of the head and its sensory appendages. Some mechanosensory neurons project further to the first thoracic ganglion. In addition to receiving input from chemosensory neurons of the maxilla, the SEG may also receive chemosensory input from epipharyngeal sensilla of the labrum.

Original languageEnglish (US)
Pages (from-to)1-36
Number of pages36
JournalPhilosophical transactions of the Royal Society of London. Series B, Biological sciences
Issue number1168
StatePublished - Jan 27 1987

ASJC Scopus subject areas

  • General Biochemistry, Genetics and Molecular Biology
  • General Agricultural and Biological Sciences


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