Delias yabensis Joicey & Talbot 1922
Subspecies : No subspecies
              f.brevifascia - Joicey & Talbot 1922

                          recto              Male               verso                                   recto             Female           verso

Delias yabensis
                   Obano, Irian Jaya, 1800m. - 4 July 1988                  Ilu, Central Mtns, Irian Jaya - November 1990
                                 ©Jean François Labbé                                                            ©Akira Yagishita
Wingspan : 40-43 mm
Range        : yabensis - Weyland Mtns, Irian Jaya
Notes         :
At one time considered a subspecies of Delias aroae, this species differs by having a reduced black apical area on the forewing, and a broader yellow band on the underside hindwing.

Original Description: Joicey & Talbot 1922(Bulletin Hill Mus. i.pt.2) "Male: Upperside of fore wing with distal black narrower, especially in cellules 4 and 5. Hind wing with reduced marginal black. Underside of fore wing with the white area continued from veins 4 to 9, and the costal black forming a triangular patch over the upper angle of the cell. The white spots beyond the cell vary in size and are rarely absent as in the typical form (D. aroae). Subapical spots as in the type form. Hind wing with broader yellow discal band, larger cell spots and larger marginal spots.

Female: there are two forms. The typical form is similar to the known female of aroae. Upperside of the fore wing with a black disco-cellular mark and the white area extending more or less into cellules 4 and 5. Hind wing as in the typical form. Underside as in the male, the discal band of hind wing with white ground-colour as in the type form".

Female f.brevifascia: Resembles D. pheres rectimargo. Fore wing above as in female yabensis. Hind wing as in rectimargo with narrower black border. Underside of fore wing as in yabensis.  Hind wing with the band abbreviated and vestigial posteriorly. Occurs with the typical form.