The new species targets ants already infected by Ophiocordyceps, or “zombie fungus”, which manipulates the infected insect’s nervous system and makes it behave erratically before killing it and bursting from its carcass.
“Rather than manipulating the insect’s nervous system itself, Pleurocordyceps infiltrates and feeds directly on the thriving Ophiocordyceps tissue inside the host,” Seelan said.



So this is a parasite of a parasite!? Crazy world we live in…
This is called hyperparasitism
https://en.wikipedia.org/wiki/Hyperparasite.
Three levels of parasitism have been observed in fungi: a fungus (Rhinotrichella globulifera) on a fungus (Gen. Hypomyces) on a fungus (Fomes hemitephrus) on a tree.[9]
It’s parasites all the way down.