1a) Ascospores with high crests (0.5–1 μm)	2
1b) Ascospores with low crests (< 0.5 μm) or crests lacking	4
2a) Ascospores with smooth or faintly roughened convex surface	3
2b) Ascospores with rugulose convex surface	A. montevidensis
3a) Ascospores small, with spore bodies measuring 3.5–5.5 × 3–4 μm	A. chevalieri
3b) Ascospores large, with spore bodies measuring 5.5–7.5 × 3.5–6 μm	A. glaucus
4a) Ascospores with low crests (< 0.5 μm)	5
4b) Ascospores lack crests	6
5a) Conidia small, 4–7 × 3.5–5.5 μm	A. cibarius
5b) Conidia large, (6–)8–13.5 × 4–9 μm	A. niveoglaucus
6a) Ascospores with furrow present or pronounced	7
6b) Ascospores with furrow absent or showing as a trace	A. pseudoglaucus
7a) Grows well on M60Y at 37 °C	A. ruber
7b) Does not grow on M60Y at 37 °C	A. proliferans