Xenosaurus is a genus of lizards; it is the only extant genus in the family Xenosauridae, with 14 species currently recognized.

[2] Also known as knob-scaled lizards, they can found in southwestern Tamaulipas and eastern Guerrero in Mexico.

[3] These lizards are known to feed on a variety of crawling and flying insects.

This genus mostly eats orthopterans, coleopterans (beetles), dipterans, and myriapods.

[2][5] Nota bene: A binomial authority in parentheses indicates that the species was originally described in a genus other than Xenosaurus.