Setaria equina

Se·tar·i·a e·qui·na

a species that is a common parasite of horses and other equids in all parts of the world; they are slender whitish filaments, several inches in length, usually found free in the peritoneal cavity, but occasionally reported in the pleural cavity, lungs, scrotum, eye, and intestine.
References in periodicals archive ?
Ocular infection of donkeys (Equus asinus) with Setaria equina.
7% of animals had more than one disease/condition [Gasterophilus nasalis (stomach), Habronema muscae (intestine), Setaria equina (liver), Cyathostomum catinatum (intestine), Cylococyclus nassatus (intestine) were recovered in autopsy of equines]
Efficacy of ivermectin against adult Setaria equina and microfilaria of Onchocerca cervicalis in ponies.
The parasite were surgically removed from the anterior chamber of the eye and identified as Setaria equina based on light microscopic features.
In India, equine ocular setariasis reported to be the important cause of corneal opacity is commonly caused by Setaria digitata and Setaria equina (Sathu, 1974).