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The probing stimulatory effect for feeding of N. lugens was found in the cases of four kinds of rice flavonoids, tricin-5-glucoside, glucotricin, orizatin and homoinetin; and out of the other 13 flavonoids, luteorin showed the effect as strong as that of the rice flavonoids.
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Kazushige SOGAWA (1976) studied this question.
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