斑 - spot, blemish, speck

unevenness (of colour, paint, etc.); irregularity; nonuniformity; blotchiness

red ring skirt (Hestina assimilis)

evenly; equably; in an uniform and orderly fashion

black spot; black speck

(Jupiter's) Great Red Spot

firebrat (species of bristletail, Thermobia domestica)

melanocytic nevus; pigmented nevus; nevocellular nevus

erythema infectiosum; slapped cheek syndrome; fifth disease

pattern of white spots; dapples

ringed seal (Pusa hispida)

Tribolodon nakamurai (species of cyprinid)

spotted color; mottled color