Pseudoparasitism with Gordius robustus.

The Gordius worm is a parasite of crickets and other arthropods, but not of humans. In almost all cases, the association between humans and the Gordius species, such as Gordius robustus, is purely coincidental. Gordius pseudoparasitism must be distinguished from true helminthic disease to alleviate patient anxiety and to avoid an unnecessary course of antihelminthics.