Pseudoboletus parasiticus, previously known as Boletus parasiticus and Xerocomus parasiticus, and commonly known as the parasitic bolete, is a rare bolete mushroom found on Scleroderma citrinum earthballs in North America.
Pseudoboletus parasiticus is one of the earliest-diverging lineages of the Boletaceae, after the clade comprising Chalciporus and Buchwaldoboletus.
The cap is hemispherical when young, later flat, yellowish brown or darker and up to wide. The yellow stem is tall and thick. The flesh is pale yellow and the spore print is olive brown.
It can be found growing on Scleroderma citrinum earthballs in eastern North America from July to September.
While edible, it is not recommended to do so, due to concerns about being poisoned by its host, the common earthball, which is poisonous.