Trichophyton interdigitale
Trichophyton interdigitale is a clonal line within sexual species T. mentagrophytes. It causes onychomycosis and tinea pedis in humans, and has never been isolated from animals. Trichophyton interdigitale isolates cannot be reliably discriminated from T.mentagrophytes by cultural techniques or Matrix-assisted [laser desorption/ionization|MALDI-TOF] mass spectrometry, and therefore ITS region DNA sequencing is recommended.