Calephelis muticum, the swamp metalmark, is a butterfly species in the family Riodinidae.

Males have pointed forewings while the females tend to be slightly more rounded.

Both sexes have bright red-brown wings which are lightly checkered.

[2] The eggs are laid singly on the underside of the host plant.

Calephelis muticum is threatened by ongoing loss and degradation of habitat, invasive species, and pesticides.