The Oxyporinae are a subfamily of the Staphylinidae. One genus, Oxyporus, with 132 species, is found worldwide.
All Oxyporinae have prominent mandibles. Their apical labial palpomeres are very large and strongly securiform. Their tarsi, like most Staphylinidae, are 5-5-5.
Most Oxyporinae are fungivores. Their whole lifecycle involves fungi, as females construct egg-laying chambers in fungi and reproduce in them. Thus, most scientists inspect mushrooms and fleshy fungi to find these creatures.