See text Tenebrio is a genus of darkling beetles.

[2][3] Adults are 12–18 mm (0.47–0.71 in) long and can live for 1–2 years.

The larvae are minor pests, but they are also widely reared and sold as pet food.

[3] The genus contains the following extant species:[2][3][4] Four species are known from fossils found in Germany and Canada:[1][5]