A recent taxonomic revision of the dermatophytes has reduced the genus Lophophyton to a single species (de Hoog et al. 2017).
Lophophyton gallinae is a zoophilic fungus causing fowl favus in chickens and other fowl, affecting the comb and wattles producing “white comb” lesions. A rare cause of tinea in humans. Invaded hairs show a sparse ectothrix infection but do not fluoresce under Wood’s ultra-violet light.
Colonies are flat with a suede-like texture and are white with a pinkish tinge in colour. Some cultures show radial folding. An orange-pink “strawberry” reverse pigment is usually present. Macroconidia, when present, are usually five to six celled, thin to thick-walled, slightly echinulate, cylindrical to clavate with a narrow base and blunt tip, 15-60 x 6-10 µm. Microconidia are ovoidal to pyriform in shape.
Macroconidial morphology, culture characteristics and clinical lesions in chickens.
ITS sequencing is recommended.
Rebell and Taplin (1970), Rippon (1988), Gräser et al. (2008), Cafarchia et al. (2013), de Hoog et al. (2015, 2016).