Taxa named by Robert Thomson Leiper

Heterophyidae is a family of intestinal trematodes in the order Plagiorchiida.

Trichostrongylidae is a family of nematode in the suborder Strongylida.

The Syngamidae are a family of nematodes which commonly parasitize mammals, birds, and rarely humans. They are classified in the Strongyloidae superfamily and Strongylata order.

Protostrongylidae is a family of nematodes belonging to the order Rhabditida.

Gastrodiscoides is genus of zoonotic trematode under the class Trematoda. It has only one species, Gastrodiscoides hominis. It is a parasite of a variety of vertebrates, including humans. The first definitive specimen was described from a human subject in 1876. It is prevalent in Bangladesh, India, Burma, China, Kazakhstan, Philippines, Thailand, Vietnam, and the Volga Delta of Russia, with isolated cases from Africa, such as Nigeria. It is especially notable in the Assam, Bengal, Bihar, Madhya Pradesh, Odisha and Uttar Pradesh states of India.