Stenomax aeneus is a species of darkling beetles in the family Tenebrionidae).

These beetles have a black-brown, elongated body with very long legs.

At the end of the abdomen, the elytra form two small spurs.

[2] This quite common species is present in south-eastern and Central Europe (Austria, Czech Republic, Germany, Hungary, Poland, Slovakia and Switzerland).

[3] These beetles live on branches infested with fungi and under bark of deciduous trees.