Liparetrus crassus is a species of beetle of the family Scarabaeidae. It is found in Australia (Western Australia).
Taxonomy This species belongs to the rufipennis species group. The defining characters of this group include the absence of setae and scales on the disc of the pronotum.
Description Adults reach a length of about . The head and pronotum are dark reddish brown to black, while the elytra, abdomen and ventral surface are reddish or dark reddish brown.
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