![]() Using a diluted ethanol extract (equivalent to 0.06 g fresh leaf/ml), 400-600 eggs/female were laid as many as when a potted plant was used. Oviposition behavior was well stimulated when the artificial leaf was supplied with the leaf extracts of fresh sweet potato leaves. Eggs were laid mainly on the lower surface of the plastic disc which was convenient for the collection of eggs. The filter paper was kept moist by absorption of a leaf extract. ![]() It consists of a truncated cone disc sandwiched between a sheet of filter paper (top) and a plastic disc (bottom). An artificial leaf used for oviposition by the sweet potato hornworm, Agrius convolvuli (Lepidoptera, Sphingidae), was developed based on observations of adult behavior.
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