Oestridae
	Gasterophilinae
			Gasterophilus haemorrhoidalis (L.)  (1, larvae only)
				(4, as G. inermis Brauer)
			G. intestinalis (DeGeer)  (1,4,6)
			G. nasalis (L.)  (1,4,6)
	Cuterebrinae
			Cuterebra americana (Fab.)  (1,7)
			C. buccata (Fab.)  (1,4,7)
			C. clarki Sabrosky  (7)
			C. f. fontinella Clark  (1,7)
			C. horripilum Clark  (1)(4, as C. cuniculi (Clark))
				(7, as C. abdominalis Swenk)
			C. jellisoni Curran  (7)
	Oestrinae
			Oestrus ovis L.  (1)
	Cephenemyiinae
			Cephenemyia jellisoni Townsend  (5)
	Hypodermatinae
			Hypoderma bovis (L.)  (8,9)
			H. lineatum (Villers)  (2,3,4,6,8,9)
1. In OSU Collection - Det. D. C. Arnold
2. In OSU Collection - Det. S. W. Bromley
3. In OSU Collection - Det. D. G. Hall
4. Reported by Eddy & Emerson, 1940
5. Reported by Hair et al., 1969
6. Reported by James, 1947
7. Reported by Sabrosky, 1986
8. Reported by USDA, 1970
9. Reported by Weintraub & Howell, 1964
5 genera - 13 species