Larvae of horse bot fly Gasterophilus intestinalis in the stomach of a horse, from here.

Belongs within: Oestridae.

The Gasterophilinae include the stomach bot flies, with larvae that are parasitic on the mouth, tongue and stomach lining of large mammals. Eggs are laid on the host's hair and enter the host when it licks itself.

Characters (from Colless & McAlpine 1991, as Gasterophilidae): Proboscis vestigial, subcranial cavity much reduced. R1 without setulae; M1+2 almost straight, ending in wing margin; lower calypter vestigial. Prosternum not prominent.

<==Gasterophilinae [Gasterophilidae]
    |--Cobboldia elephantis A71
    |--Platycobboldia loxodontis A71
    |--Rodhainomyia roverei A71
    |--Ruttenia loxodontis A71
    |--Neocuterebra squamosa A71
    |--Gyrostigma A71
    |    |--G. conjugens A71
    |    |--G. pavesii A71
    |    `--G. sumatrensis A71
    `--Gasterophilus A71
         |--G. haemorrhoidalis A71
         |--G. intestinalis A71
         |--G. nigricornis A71
         `--G. pecorum A71

*Type species of generic name indicated


[A71] Askew, R. R. 1971. Parasitic Insects. Heinemann Educational Books: London.

Colless, D. H., & D. K. McAlpine. 1991. Diptera. In: CSIRO. The Insects of Australia, pp. 717-786. Melbourne University Press.

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