DESCRIPCION DE UNA NUEVA ESPECIE DE MALASSEZIA: MALASSEZIA OCHOTERENAI AGENTE CAUSAL DE PITYRIASIS (TINEA) VERSICOLOR, Y POSICION SISTEMATICA DEL GENERO MALASSEZIA

Resumen

A new species of Malassezia, Malassezia ochoterenai is described.
The organism produces a typical pityriasis versicolor of the chest.
The microscopic picture of the scales is very similar to that of M. furfur.
On artificial media the colonies are dark brown, dull, velvety, never moisty nor shiny, cerebriforme or flat.
The dermatophyte is characterized by the formation of "hemispores" on various media .
Also clamidospores and oidia - like cells are produced in abundance.
Yeast - like cells are seen in most media.
Gelatine is not liquefied .
Indol is not produced.
Litmus-milk is alcalinized starting on the 10th day.
Acid and no gas with glucose, xilose, d-levulose, d-galactose, mannose, sacarose and maltose.
No acid or gas with arabinose, lactose, cellobiose, starch, inuline, dextrine and mannitol.
The production of a black pigment which difuses in some media is characteristic.
In spite of the presence of oidia - like cells and of endogenous spores similar to those of the genus Hemispora the genus Malassezia is placed into the Eremascaceae of Dodge.