Macrodactylus griseus is a species of beetle of the family Scarabaeidae.BioLib It is found in Argentina.
Description Adults reach a length of about 7 mm. They are very similar in colour and shape to Macrodactylus chilensis, although in this species the pronotum is broader. The colouration is black, with the elytra, pygidium and legs reddish-brown. The upper and lower surfaces are densely covered with scale-like hairs. Those on the upper surface are grey or yellowish-grey. The head is densely punctate and the antennae are reddish-yellow, with a darkened club.
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