Stultutragus fenestratus is a species of beetle in the family Cerambycidae. It was described by Hippolyte Lucas in 1857.Bezark, Larry G. A Photographic Catalog of the Cerambycidae of the World. Retrieved 22 May 2012. It is found in Brazil (Goiás, Bahia, Minas Gerais, Espírito Santo, Rio de Janeiro, São Paulo, Santa Catarina) and Paraguay.
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