The causative agent of Favus is
Microsporum audounii
Microsporum canis
Trichophyton mentagrophyte
Trichophyton schoenleinii
Favus is caused by Trichophyton schoenleinii and Trichophyton violaceum. Trichophyton mentagrophyte causes Tinea barbie and ectothrix hair infection. Microsporum audouinii - Tinea capitis and ectothrix hair infection. Microsporum canis infects dogs and cats. Reference: Textbook of Microbiology; Baveja; 4th edition
mycology