Abstract
The labellar response of the mosquito Culiseta inornata (Williston) consists of initiation of spike activity in the labellar chemosensory hairs by the application of an adequate stimulus, conduction of these impulses to the CNS, integration by the CNS with initiation of efferent spike activity, and finally development of muscle action potentials and muscle tension to open the labellar lobes. The overall time for the labellar response was 39 msec. Chemoreceptor latency was 5–10 msec, total combined afferent and efferent conduction time was 17 msec and finally, the time required for integration was 12–17 msec.

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