Diasporus citrinobapheus shows the following combination of characters: coloration bright yellow to orange in life; head almost as broad as long, but comparatively broad in relation to SVL; skin of dorsum smooth; venter coarsely areolate; tympanum covered by skin but annulus clearly visible; TD about 41% of ED; EL on average narrower than IOD; snout subacuminate in profile and rounded to subovoid in dorsal outline; disks of fingers and toes slightly expanded, disk covers of most fingers and toes spadate, but lacking papillae; disk pads of most fingers and toes triangular; subarticular tubercles of hands and feet rounded, very flat, almost not visible; vomerine odonthophores longish oval and widely separated; vomerine teeth weakly developed; upper eyelid usually smooth, very low pustules in some individuals; heel smooth (Hertz et al. 2012).
Coloration in life: All examined specimens show shades of bright yellow and orange dorsally; some have dark grayish and/or whitish-grayish spots. Ventral surfaces are transparent and almost entirely lacking yellow pigment apart from the yellow male vocal sac.
In preservation (70% alcohol), the bright yellow and orange colors fade rapidly to a pale grayish yellow with scattered dark grayish blotches in some individuals. Legs pale orange; vocal sac pale yellow in males; gular area in females pale gray; tips of digits dark grayish black. Dark grayish black eyeballs shining through skin when head is viewed dorsally (Hertz et al. 2012).
Variation: Compared to other species of this genus, the individuals of D. citrinobapheus available exhibit little variation in their coloration. All show a yellow to orange dorsal ground color in life. This can either appear bright and clear or somewhat dirty, depending on the pigment translocation within the melanophores in the frogs skin. In some individuals, higher concentrations of melanophores in certain areas of the dorsum form dark blotches or stripes. This is especially the case in specimens from the western part of its known distribution area (Hertz et al. 2012).
The species authorities for D. citrinobapheus are Hertz, A., Hauenschild, F., Lotzkat, S., and Köhler, G.
The specific name citrinobapheus is a noun in apposition and derived from the Greek words citrinos (citrin-yellow) and bapheus (dyer) referring to the yellow body color that stains ones fingers yellowish when the frog is handled (Hertz et al. 2012).