Gastrobothrus occultus is a species of beetle of the family Staphylinidae. It is found in New Zealand (North Island).
Description Adults reach a length of about . The body is reddish-brown, with the elytra and appendages brighter.
Life history They have been collected in leaf litter.
Etymology The species name is derived from Latin occultus (meaning concealed) and refers to completely reduced median antebasal fovea on the pronotum of this species.
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