1. Growing on ants, producing dense bulbils on the insect’s body ……………………………………………………………………………Xenomorphomyces

– Growing on leaves, forming superficial hyphal networks or mycelial masses ………………………………………………………………………………….2

2. Forming a delicate superficial weft of compact, dark-colored hyphae on leaves ………………………………………………………………………………3

– Forming a black, arachnoid (web-like) mycelial aggregation on leaves ………………………………………………………………………………………….6

3. Pycnidia ampulliform (flask-shaped), subspherical to pyriform, brown ………………………………………………………………………………………..4

– Pycnidia irregularly cylindric, straight or sinuous, short to elongate ………………………………………………………………………….Scolecoxyphium

4. Conidia globose to clavate, aseptate (non-septate) ………………………………………………………………………….…………………..Readerielliopsis

– Conidia septate ………………………………………………………………………………………………………………………………………………………….5

5. Conidia thread-like (filiform), fusiform-ellipsoid, with up to 15 septa ………………………………………………………………………..Phaeoxyphiella

– Conidia oblong or ovoid, with 3–4 transverse septa …………………………………………………………………………….…………………..Fumagospora

6. Ascostromata stalked; ascospores oblong to saccate, 3-septate, hyaline …………………………………………………………………………………Scorias

– Ascostromata sessile (without stalks); ascospores fusoid, 3-septate, enveloped by a mucilaginous sheath, hyaline ………………………….Alloscorias