Hi Joseba,

I do not know much about Entomophthora. Only that it is not an ascomycete - so you are out of topic here :-(

Best, Lothar

Entomophthoraceae are very difficult to determine and many of them are unknown, because there aren't so much people who work with them and few experts :(
As with the ascomycetes, you also have to work out some characteristics.
The host is very important to know, best with genus.
You must look for primary- and secondary conidia with the following method by Siegfried Keller and sometimes there are another conidia in the host.
This method take a long time 3-4 hours for the primary conidia and another 3-4 hours for the secondary conidia (if there are any).
You must measure the conidia, make pictures from the conidiophores and look for cystidia (if there are any).
And at the end you can consult literature or better you found an expert.

best regards,
Thorben

Hello Chris,

not that I very likely use it much, but anyway I would be interested in the key.

Thanks and best regards, Lothar