Monochamus dubiusMonochamus dubius is a species of beetle in the family Cerambycidae. It was described by Charles Joseph Gahan in 1894. It is known from India, Thailand, Myanmar, Vietnam, Taiwan, and China.VarietasMonochamus dubius var. luteovittatus Breuning, 1944Monochamus dubius var. sparsenotatus Pic, 1920