Electronically Recorded Waveforms Associated with Salivaton and Ingestion Behavior of the Aster Leafhopper, Macrosteles fascifrons STAL (Homoptera : Cicadellidae)

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Abstract
The salivation and ingestion behavior of the aster leafhopper, Macrosteles fascifrons STAL on sucrose and plant substrates was recorded using the electronic measurement system developed by MCLEAN and KINSEY (1964). The salivation and ingestion activities of the leafhopper when probing into a feeding chamber filled with a 5% solution of sucrose produced two kinds of waveforms : salivation (S) and ingestion (I). These waveforms were similar to those observed with the pea aphid, Acythosiphon pisum HARRIS (MCLEAN and KINSEY, 1964, 1965. 1967). On rice plants, the leafhoppers often produced other waveforms in addition to S and I waveforms. The acitivities associated with these waveforms during leafhopper probing within rice plant tissue were not determined but it is possible that these unknown wave forms may be important in understanding in more detail, the probing and ingestion behavior of leafhoppers. These unknoen waveforms were labelled U1, U2 and U3. It appears that some modification of the original aphid measurement system will be necessary in order to more precisely interpret leafhopper salivation and ingestion activities.