Characteristics

Staphylococcus

Pinhead colonies

Streptococcus

Pinpoint colonies

Streptococcus pneumoniae

Coin with raised rim (draughtsman appearance)

Aeromonas & Yersinia on CIN agar

Bull’s eye colonies

Yersinia spp.

Safety pin appearance (bipolar staining)

Neisseria gonorrhoeae

Flow of seed

Neisseria gonorrhoeae

clap

Neisseria gonorrhoeae

Associated with brothels

Neisseria gonorrhoeae

Kidney bean–shaped

Vibrio parahaemolyticus

Summer diarrhea

Vibrio cholerae O1

Asiatic/Epidemic cholera

Campylobacter jejuni

Darting motility

Campylobacter jejuni

Seagull-wing or S-shape, long spirals

Proteus spp.

Swarming colonies on agar

Proteus spp.

Burnt chocolate smell

Proteus mirabilis

Struvite kidney stones

Hafnia alvei

Beer wort brewerie

Neisseria sicca

Breadcrumb-like colonies

Neisseria elongata

Elongated, rod-shaped Neisseria

Vibrio

Shooting star motility