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Elaeophora bohmi

Scientific classification
Kingdom: Animalia
Subkingdom: Eumetazoa
(unranked): Bilateria
Superphylum: Platyzoa
Phylum: Nematoda
Class: Secernentea
Subclass: Spiruria
Order: Spirurida
Superfamily: Filarioidea
Family: Onchocercidae
Genus: Elaeophora
Species: E. bohmi
Binomial name
Elaeophora bohmi
Supperer, 1953

Elaeophora bohmi is a nematode parasite found in various arteries of the horse. The adult males are 44-55 mm long and 95 µm wide, while adult females can be over 12 cm long and 210 µm wide. Microfilariae are not sheathed, and measure 300-330 µm long and 6-7 µm wide. The life cycle and clinical symptoms of infestation by E. bohmi have not been described.


Discovery and nomenclature

Elaeophora bohmi was first described in 1953, from adults found in the arteries and veins in the extremities of Austrian horses.[1] In 1976, some authors considered it to be a species of the genus Onchocerca -- Onchocerca bohmi (Supperer 1953) Bain et al., 1976[2] -- but most recent parasitology texts still refer to this species as Elaeophora bohmi.

Hosts and geographic distribution

So far, E. bohmi has only been found in horses (Equus caballus) in Austria and Iran. Adults were found in the medial layer or outside layer of tissues within the artery wall.

Life cycle

The life cycle of E. bohmi has not been studied.

Prevalence and clinical significance

In the original species description, Supperer found E. bohmi in 6.7% of the Austrian horses examined. A survey of blood samples found E. bohmi microfilariae in 8.69% of Iranian horses examined, but none in donkeys or mules.[3] Clinical symptoms of infestation have not been described.


  1. Supperer, R. (1953) "Filarosen der Pferde in Österreich". Wiener Tierärztliche Monatsschrift 40(4):193-220.
  2. Bain, O., R.L. Muller, Y. Khamis, J. Guilhon, T. Schillhorn van Veen (1976) "Onchocerca raillieti sp.n. (Filaroidea) chez l'Ane domestique en Afrique." Journal of Helminthology 50(4):287-293.
  3. Mirzayans, A. and H. Maghsoodloo (1977) "Filarial infection of Equidae in the Tehran area of Iran." Tropical Animal Health and Production 9(1):19-20.


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