Astaena neglecta is a species of beetle of the family Scarabaeidae. It is found in Brazil (Bahia).
Adults reach a length of about 9 mm. They have an elongate-oval body. The upper and lower surfaces are reddish-brown and shiny. The elytra and pronotum are light brown and sparsely ciliate, with a few setae at the pygidium tip. The upper surface is otherwise glabrous.