Table 2.
Overview of morphological criteria to differentiate between the members of Aspergillus section Usti.
| Species | CYA37 (mm) | YES (mm) | Ehrlich reaction | Reaction on CREA | Conidial colour on MEA** |
|---|---|---|---|---|---|
| A. ustus | No growth | 43-49 | None | Good growth, faint yellow mycelium | Hair brown |
| A. puniceus | No growth | 48-53 | None | Moderate to good growth, yellow mycelium | Olive brown |
| A. calidoustus | 20-35 | 36-41 | Violet | Weak to moderate growth, hyaline mycelium | Brownish grey |
| A. insuetus | No growth | 23-30 | Violet | Good growth, hyaline mycelium | (Brownish) grey to light grey |
| A. keveii | No growth | 40-46 | Violet* | Good growth, hyaline mycelium | Brownish grey / pinkish brown |
| A. pseudodeflectus | 15-20 | 20-30 | None | Weak to moderate growth, hyaline mycelium | No sporulation |
| A. granulosus | 30-35 | 35-40 | Violet | Weak growth, hyaline mycelium | Buff to greyish brown |
| E. heterothallica | 5-10 | 38-42 | None | Weak growth, bright yellow mycelium | No sporulation |
*
All have violet reaction, except CBS 113227
**
Colour according Methuen handbook of colours