Ataenius atramentarius is a species of beetle of the family Scarabaeidae. It is found in Ecuador and Peru and on the Galapagos Islands.
Description Adults reach a length of about . They have a shining, carbon black body.
Life history Specimens have been collected in premontane moist forests. Specimens from the Galapagos Islands were found in the arid zone in leaf litter, in tortoise pens and in cow dung.
References