斑

unevenness (of colour, paint, etc.)

speckle

single part (of a whole)

(Jupiter's) Great Red Spot

senile plaque

ecchymosis

leaf spot

Tribolodon nakamurai (species of cyprinid)

bloody spots

variegated

porphyritic structure

water spot (e.g. dried on a dish after washing)

Japanese spotted fever

senile lentigo

postmortem lividity

Great Dark Spot (on Neptune)

mottled

pattern of white spots

purple spot (on a plant)

(scattered) spots

Laue spot

ringed seal (Pusa hispida)

vitiligo

variegated streaks

age-related macular degeneration

remaining in spots

white spot

Rocky Mountain spotted fever

pigmented macule

spot (on a plant; caused by disease or insects)

Atlantic spotted dolphin (Stenella frontalis)

erythema infectiosum

mottled teeth

Japanese dace (Tribolodon hakonensis)

erythema nodosum

nevus

spotted color

blister beetle

gabbro

porphyry

age-related macular degeneration

black spot

granule

speckled horse

monarch butterfly (Danaus plexippus)

spotbelly rockfish (Sebastes pachycephalus)

firebrat (species of bristletail, Thermobia domestica)

blood spot

purpura

buchi salamander (Hynobius naevius)

great spotted cuckoo (Clamator glandarius)

pantropical spotted dolphin (Stenella attenuata)

melasma

Meloe coarctatus (species of oil beetle)

acoustic spot

leopard (horse coat pattern)

Spanish fly (Lytta vesicatoria)

brindled ox

barred button quail (Turnix suscitator)

white-spotted citrus longhorned beetle (Anoplophora malasiaca)

brown spot (disease)

lingering patches of snow

Rhabdoblatta yayeyamana (species of cockroach)

red spots

Mongolian spot

Anopheles (genus of mosquitoes)

spotted seal (Phoca largha)

green and black poison dart frog (Dendrobates auratus)

chestnut tiger butterfly (Parantica sita)

tree nymph butterfly (Idea leuconoe)

chloasma

macula

long-eared owl (Asio otus)

bornite

spots

tiger stripes

Indian bullfrog (Hoplobatrachus tigerinus)

bean blister beetle (Epicauta gorhami)

pied harrier (Circus melanoleucos)

tiger moon shell (Natica tigrina)

freckle

phenocryst

purpura

Nephila clavata (Oriental species of golden orb-weaving spider)

black speckles

blind spot (on the retina)

tiger beetle (esp. the Japanese tiger beetle, Cicindela japonica)

Japanese grosbeak (Eophona personata)

Anopheles sinensis (species of mosquito)

lupus erythematosus

freckle

evenly

black and white snapper (Macolor niger)

cafe-au-lait spot (birthmark)

raccoon butterflyfish (Chaetodon lunula)

superciliary stripe

sparse mist

zebra shark (Stegostoma fasciatum)

Cape pigeon

Indian meal moth (Plodia interpunctella)

spotted eagle ray (Aetobatus narinari)

Endoclita sinensis (species of moth)

Rhabdoblatta guttigera (species of cockroach)