endomychidæ

from The Century Dictionary.

• A family of trimerous or cryptotetramerous clavicorn beetles, related to the ladybirds or Coccinellidæ.
• They have cylindrical maxillary palpi with the terminal joint filiform; long antennæ an elongated head; often grooves at the base of the prothorax; the dorsal segments of the abdomen partly membranous; the ventral free; the wings not fringed; the tarsi typically 3-jointed, with the second joint dilated; and the claws simple. There are about 400 species, which live on fungi in both the larval and the mature state, and are sometimes called fungus-beetles. In some the tarsi are evidently 4-jointed. The family is most numerous in the tropics.