Demobotys pervulgalis is a moth in the family Crambidae. It was described by George Hampson in 1913. It is found in Japan and China.
Subspecies Demobotys pervulgalis pervulgalis (Japan) Demobotys pervulgalis exigua Munroe & Mutuura, 1969 (China: Nanjing) Demobotys pervulgalis hunana Munroe & Mutuura, 1969 (China: Hunan)
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