Ataenius strigicauda is a species of beetle of the family Scarabaeidae. It is found in Argentina, Bahamas, Barbados, Becquia, Bolivia, Brazil (Acre, Amazonas, Bahia, Espírito Santo, Goiás, Mato Grosso, Mato Grosso do Sul, Minas Gerais, Pará, Rio de Janeiro, Rio Grande do Sul, Rondônia, Roraima, Santa Catarina, São Paulo, Tocantins), Chile, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, Grenada, Guadeloupe, Guatemala, Hispaniola, Honduras, Jamaica, Martinique, Mexico (Michoacán, Puebla, Veracruz), Nicaragua, Panama, Paraguay, Peru, Puerto Rico, Saint Croix, Saint Lucia, Saint Vincent, Trinidad & Tobago and the West Indies.
Description Adults reach a length of about . They have a piceous to carbon black, more or less shining, and often distinctly microreticulate, subparallel-sided body.
Life history Specimens have been collected in cattle excrements.
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