Tolypocladium longisegmentum

The Tolypocladium genus was once labeled "Elaphocordyceps" but was synonymized with Tolypocladium in 2014. Tolypocladium longisegmentum parasitizes Elaphomyces truffles in particular. Often confused with Tolypocladium capitatum, the two species can be differentiated via spore size and cap glossiness.