Cryptocephalus sericeus is a species of beetle of the family Chrysomelidae, subfamily Cryptocephalinae.

[2] These beetles inhabit lawns and meadows, especially with yellow flowers of Apiaceae species.

Elytra are irregularly punctured, not arranged in longitudinal rows.

Pronotum and elytra are golden green in males, while females show a metallic bronze color, with green-blue, orange or yellow reflections.

The feed on pollen, especially on the yellow flowers of Apiaceae species.