Spirocercid nematode (thick stomach worm) of swine reaching as female a size of up to 20 cm. Coprophagic beetles are intermediate hosts. The larvae 3 may also become included into transport hosts such as small mammals, birds, etc. The female and male worms live on the surface of the mucocutaneous layer of the stomach and may introduce hemorrhagic inflammations. Occasional infections of numerous humans have been described, too.