Amathusia friderici, commonly known as bicolor-haired palmking, is a butterfly found in the Indomalayan realm[1] It belongs to the Satyrinae, a subfamily of the brush-footed butterflies.
Described as a variety of Amathusia phidippus from which it differs in the following minor respects. The upper hindwing has a concealed hair pencil (scent pencil-a dorsal glandular fold or oval shaped depression on the wing membrane covered by pencils of long hairs) in space 1b. The fringe in 1a is black-brown and just crosses vein 1a .The upper hairs of the abdominal hair pencil are dark grey-brown; the lower hairs are light yellowish buff. The female has a darker ground colour than Amathusia phidippus with rich clear pale orange subapical marks.[2] Images at gbif including A. f. holmanhunti f. utana Corbet & Pendlebury, 1936