Ataxia obtusa is a species of beetle in the family Cerambycidae. It was described by Henry Walter Bates in 1866. It is known from BrazilBioLib.cz - Ataxia obtusa. Retrieved on 8 September 2014. (Espírito Santo, Rio de Janeiro, São Paulo, Paraná, Santa Catarina, Rio Grande do Sul), Bolivia (Santa Cruz) and Paraguay.
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