Because they lack pigment, proteinoplasts are more specifically a kind of leucoplast.

This amphipod, like many subterranean species, is eyeless and lacks pigment.

It is considered a leucistic animal, one that lacks pigment everywhere but in the eyes.

Judges may also disallow Goldens with pink noses, or those lacking pigment.

Etioplasts lack active pigment and can technically be considered leucoplasts.

Their bodies lack pigment and are translucent.

Albinos lack pigment in their skin, eyes and hair.

The lower edge of the caudal fin can be white in color with all of the other fins lacking pigment.

He explained that infants and children lack pigment in the lens of the eye, which helps filter ultraviolet rays.

Often the tail tuft and the end of the tail is white or lacking pigment.