Gasterophilus

Gasterophilus
Gassterophilus intestinalis
Scientific classification
Domain:	Eukaryota
Kingdom:	Animalia
Phylum:	Arthropoda
Class:	Insecta
Order:	Diptera
Family:	Oestridae
Subfamily:	Gasterophilinae
Genus:	Gasterophilus Leach, 1817
Species
G. flavipes (Oliver, 1811) G. haemorrhoidalis (Linnaeus, 1758) G. intestinalis (De Geer, 1776) G. inermis (Brauer, 1858) G. meridionalis (Pillers & Evans, 1926) G. nasalis (Linnaeus, 1758) G. nigricornis (Loew, 1863) G. pecorum (Fabricius, 1794) G. ternicinctus (Gedoelst, 1912)
Synonyms
Gastrus Meigen, 1824 Gastrophilus Agassiz, 1846 Enteromyza Rondani, 1857 Rhinogastrophilus Townsend, 1918 Enteromyia Enderlein, 1934 Stomachobia Enderlein, 1934 Haemorrhoestrus Townsend, 1934 Progastrophilus Townsend, 1934

Gasterophilus, commonly known as botfly, is a genus of parasitic fly from the family Oestridae that affects different types of animals, especially horses, but it can also act on cows, sheep, and goats. A case has also been recorded in a human baby.^[1]

This parasite affects the animal gastrointestinal tract^[2] in order to give to their offspring an alimentary source.

Although not deadly, due to the usual low larva population that infests the animal, large larva populations can cause health issues to the host. For example, a typical horse can tolerate a hundred larvae without any effects.