The Morphology of the Chordotonal Organs of the Antenna, Mouthparts and Legs of the Lesser Migratory Grasshopper, Melanoplus mexicanus mexicanus (Saussure)

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Abstract
The chordotonal organs of insects and especially those of the Acrididae are well known. Slifer (1936) lists 76 scoloparia which are distrilluted throughout the body of Melanoplus differentialis. Although the sense organs of Melanoplus mexicanus described in this study are, in general, similar to thnse found by Slifer, her summary account would seem to warrant a more detaited consideration of their structure.The organ of Johnston in the second segment of the antenna is included because of its structural similarity to the chordotonal organs, although it is usually considered to have a special sensory functinn distinct from that of the chordotonal type.

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