Nudaria mundana, the muslin footman, is a moth of the subfamily Arctiinae.

Especially transparent specimens, which occur everywhere together with true mundana, are called ab.

The moths on the wings strongly resemble neuropterids of the chrysopid genus Hemerobius.

The larva is transparent glossy lead grey or greenish, with fine hairs, which are longer and arranged in tufts anteriorly and posteriorly: the head black.

The pupa is transparent greenish white, later yellowish, with deep black eyes and small minute dark dots on the back, in a loose cocoon which is protected by the hairs woven into it and is attached under rocks and flat stones.