Oua
Ouachitychus Chandler, 1988
- Ouachitychus parvoculus Chandler, 1988
Insecta → Coleoptera → Staphylinoidea → Staphylinidae
Ouk
Oukuriella Epler 1986
- Oukuriella albistyla Epler, 1986
- Oukuriella annamae Epler, 1996
- Oukuriella costaricensis Epler, 1986
- Oukuriella epleri Messias & Fittkau, 1997
- Oukuriella erikae (Reiff, 2000)
- Oukuriella fasciata Epler, 1986
- Oukuriella fittkaui (Reiff, 2000)
- Oukuriella gracilis Messias, Oliveira & Fittkau, 2000
- Oukuriella hero (Reiff, 2000)
- Oukuriella hoefleri (Reiff, 2000)
- Oukuriella intermedia Messias, Fittkau & de Oliveira, 2000
- Oukuriella jatai Trivinho-Strixino & Messias, 2005
- Oukuriella oliveirai Messias & Fittkau, 1997
- Oukuriella orellanai (Reiff, 2000)
- Oukuriella reissi (Reiff, 2000)
- Oukuriella reissi Messias, 2000
- Oukuriella riotarumensis (Reiff, 2000)
- Oukuriella rushi Epler, 1986
- Oukuriella simulatrix Epler, 1986
- Oukuriella sublettei Messias & Oliveira, 1999
Insecta → Diptera → Chironomidae
Oul
, Oulema , Ouleus , Oulimnius , Oulobophora , Oulopteryx
Oum
Oumas W.L. Peters & J.G. Peters, 2000
- Oumas orbis Peters & Peters, 2000
Insecta → Ephemeroptera → Leptophlebioidea → Leptophlebiidae
Oun
Ounia Peters & Peters, 1981
- Ounia hyalina Peters & Peters, 1981
- Ounia inclavis Peters & Peters, 1981
- Ounia loisoni Peters & Peters, 1981
Insecta → Ephemeroptera → Leptophlebioidea → Leptophlebiidae
Oup
, Oupyrrhidium
Our
, Ouradiplosis , Ouranion , Ourapteryx , Ourocnemis , Ourocnemis , Ourococcus , Ouroporopterus
Ous
, Ousipalia
Out
Outachyusa Pace, 1991
- Outachyusa chinensis Pace,1998
- Outachyusa raptoria Wollaston,1854
Insecta → Coleoptera → Staphylinoidea → Staphylinidae
Outaya Chrétien, 1911
- Outaya grisescens Chrétien, 1911
Insecta → Lepidoptera → Noctuoidea → Noctuidae
Outenikwanus Scholtz & Howden 1987
- Outenikwanus tomentosus Scholtz & Howden, 1987
Insecta → Coleoptera → Scarabaeoidea → Scarabaeidae
Outeniqua Peringuey 1902
- Outeniqua centralis Schein, 1959
- Outeniqua festiva (Péringuey, 1885)
- Outeniqua festiva andreaei Schein, 1959
- Outeniqua hobobmi Schein, 1956