[1][3] It is named in honour of William Edward Duellman [fr], herpetologist from the University of Kansas.

Dorsal skin is areolate to tuberculate and green to brown in colour, without any apparent pattern.

Third and fourth fingers and third to fifth toes bear broad, medially notched discs that are characteristic for the genus.

[4] Ceuthomantis duellmani occurs in montane dwarf forest that is completely covered by mosses and other epiphytes.

Males call from concealed sites under the ground, or hidden inside roots and holes of trees (and are extremely difficult to locate).