A genus of fungi that cause various diseases of the skin and hair, referred to as ringworm. The sexual state is known as Nannizia.
- M. audouinii — an anthropophilic species which may occasionally infect domestic animals.
- M. canis var canis — causes ringworm in dogs, cats, humans and occasionally other animals.
- M. canis var distortum — principally an infection of laboratory primates, but occurs also in dogs and cats.
- M. fulvum — occasionally infects pigs, goats, monkeys, jaguars and lions.
- M. gallinae — causes favus in chickens and turkeys.
- M. gypseum — a soil dermatophyte that causes ringworm in dogs, horses and sometimes other species.
- M. nanum — causes ringworm in pigs and rarely other animals and humans.
- M. persicolor — infects voles.
