Heteronyx exectus is a species of beetle of the family Scarabaeidae. It is found in Australia (Western Australia).
Description Adults reach a length of about . The discs of the pronotum and elytra have tiny setae and the disc of the latter is shining. The apical edges of the elytra have a fringe of short setae. The pygidium is covered with short setae, mixed with some longer ones near the apex.
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