Melanerythrus is a genus of true bugs. It is found primarily on the Australian mainland, although some occurrences are also in Tasmania and Indonesia.

There are five species recognized in this genus:

  • Melanerythrus biguttatus (Fabricius, 1775)
  • Melanerythrus ignitus Slater Alex, 1985
  • Melanerythrus mactans (Stal, 1867)
  • Melanerythrus mutilatus (Erichson, 1842)
  • Melanerythrus uptoni Slater