The fungus was reported from many European countries such as Austria, Bulgaria, the Czech Republic, France, Germany, Hungary, Italy, Luxembourg, Slovakia, Slovenia, Spain, Switzerland, and the United Kingdom.

In 2016, Pfiegler et al.[2] showed that inquiline mites can become infected by R. wasmannii, which was thought to be restricted to the genus Myrmica (Hymenoptera: Formicidae).

These authors also found immature fruiting bodies on a larva of Microdon myrmicae (Diptera: Syrphidae), which represents the first report of any Rickia species on flies.

Rickia wasmannii is thus capable of infecting alternative, unrelated host species as they co-occur in the ant nest “microhabitat”.

However, they mentioned that the alternative cannot be excluded; these infections might also represent chance events if the fungus is incapable of fulfilling its life cycle.