Aspergillus calidoustusAspergillus calidoustus is a species of fungus in the section Ustus, which grows at 37 °C and exhibits high minimal inhibitory concentrations to azoles. It is considered an agent of opportunistic infection.Laboratory identificationColonies can appear white and progress to brownish-yellow. Curved conidiophores and Hülle cells can be identified. The conidia are echinulated.