Gongylonema is a genus of thread-like nematode that was described by Molin in 1857. It is the only currently valid genus in the family Gongylonematidae, though the mysterious Spiruroides – usually placed in the Subuluridae, which are not closely related to Gongylonema among the Spiruria – might actually belong here. They are parasites of birds and mammals, transmitted by insects (especially beetles).[2] Some 38 species are known, about 12 of which have been recorded in Europe.[3][4]
Several species are significant parasites of domestic animals, causing gongylonemiasis. Human infection by these nematodes is very rare: since its discovery fewer than 100 people have been reported to be infected with these parasites,[5] always with the species G. pulchrum.[1][6]