Ataenius londrinae is a species of beetle of the family Scarabaeidae. It is found in Argentina, Bolivia, Brazil (Bahia, Mato Grosso, Minas Gerais, Pará, Paraná, Rio de Janeiro, Rio Grande do Sul, Rondônia, Santa Catarina, São Paulo), Ecuador and Paraguay.

Description Adults reach a length of about . They have a moderately shining, dark brown to piceous black body, with reddish brown legs.

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