Astaena semiopacaAstaena semiopaca is a species of beetle of the family Scarabaeidae. It is found in Ecuador.DescriptionAdults reach a length of about 10 mm. The upper surface is dark reddish-brown, while the antennae, legs and underside are light brown. The head, pronotum and pygidium are shiny, while the elytra and scutellum are dull.