Parastasia spinosa is a species of beetle of the family Scarabaeidae. It is found in Thailand.
Description Adults reach a length of about . The head and legs are dark brown, while the pronotum, elytra, propygidium, pygidium, and ventral surface are glossy reddish brown. The antennae and scutellum are dark reddish brown.
Etymology The species name is derived from Latin spinosa (meaning covered with spines) and refers to the median sac of the endophallus which is covered with three different types of spines.
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