Appias paulina, Fabricius - Lesser Albatross
Appias libythea, Fabricius - Stripped Albatross
Appias albina, Fabricius -  Common Albatross

Upf = Upper side forewing Unf = Underside forewing

Uph = Upper side hind wing Unh = Underside hind wing

Similar species
The males of all three species resemble each other very closely.

Male Lesser Albatross

The forewing outer margin is concave below the apex.
Upf The black scaling on the costal margin is more extensive.
Unf Subapical area pale ochreous; the area below, white.
Unh Uniformly pale ochreous.

Male Striped Albatross

The forewing outer margin is straight below the apex.
Unf & Unh Uniformly chalky white with no markings.

Male Common Albatross.

Forewing narrower and less arched  than in the Lesser Albatross. Termen below apex of forewing almost straight. 
Upf Black scaling along the termen and costa very slight.
Unf & Unh Very similar to the Lesser Albatross, but much lighter in color
The Common Albatross and Lesser Albatross are probably conspecific and are seasonal variations of a single species. It has been reported that there are no discernable differences between the male genitalia of the Common Albatross and the Lesser Albatross. Despite being one of the commonest butterflies in the island, the early stages of the Lesser Albatross are yet to be described, adding to the speculation that it may be a seasonal variation of the Common Albatross.

Female Lesser Albatross

Upf

The black band along the costa and termen very wide and pronounced. Not more than 3 spots in the subapical area.
Uph Lower margin with dusting of black scales, not so in the Common Albatross
Unf The black post-median band is broad, and smoothly concave. Ground colour ochreous, rich yellow in the Lankapura form. The latter also has a broad black post-median band.

Female Common Albatross

Very similar to the Lesser Albatross, but the overall black scaling is greatly reduced, and the borders are much narrower.
Upf Almost always more than 3 spots in the subapical area.
Uph Small triangular markings on the outer margin at the end of the veins.
Unf The black post-median band is very narrow and zigzag.

Danaidae | Satyridae | Amathusiidae | Nymphalidae | Acraeidea | Libytheidae | Riodinidae | Lycaenidae | Pieridae | Papilionidae | Hesperidae