Pinthanatos arctuata

From OurFoodChain

Evolved from F. khthonspongos that were pushed into the temperate zone Q. ,The biggest adaptation is their ability to survive the cold by using an increased sugar content in the cytoplasm as a form of antifreeze preventing ice from forming inside the cells. This is complimented by the natural insulation brought on by detritus.
F. arctuata still decomposes only polyphs like its ancestor.

Masses of F. arctuata zoospores will travel through the water table in search of dead polyphs. They didn’t need to deal with osmotic pressure due to possessing a cell chitinous wall. They can only move as far as the water table allows them to so they can only search for corpses during rain storms. Once they reach one, they will transition to their next life stage and start generating mycelia.

If environmental condition are too dry, fully matured cells will produce as many zoospores as possible before going into stasis. Zoospores during drawn out periods of dryness will also go into stasis. They continue to produce fuscimalase in low amounts.