Parastasia discolor is a species of beetle of the family Scarabaeidae. It is found in Indonesia (Java, Sumatra), Brunei, Malaysia (mainland, Sabah, Sarawak), the Philippines (Luzon, Mindanao) and Thailand.
Description Adults reach a length of about . In males, the head is dark brown to black, while the dorsal surface is reddish or yellowish brown. The anterior and posterior margins of the pronotum, the margins of the scutellum and the base and suture of the elytra are sometimes darkened, and this dark area sometimes coveres most of the scutellum and elytra. There are also specimens with entirely black elytra. The underside and legs are dark reddish to blackish. Females are blackish or reddish black.
Subspecies Parastasia discolor discolor (Brunei; Indonesia: Java, Sumatra; Malaysia: mainland, Sabah, Sarawak; Philippines: Luzon, Mindanao) Parastasia discolor scutellaris Erichson, 1845 (Indonesia: Sumatra; Thailand)
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