Olceclostera brama 
Olceclostera indentata 
Olceclostera magniplaga 
Old Gold Isocorypha Moth 
Old Lady 
Old World swallowtail 
Oldwife Underwing 
Oleander hawk-moth 
Oleria amalda 
Oleria fumata 
Oleria makrena 
Olethreutes quadrifidum 
Olethreutes valdanum 
Olethreutinid case moth 
Oligopleura aulaeata 
Olive angle shade 
Olive Arches Moth 
Olive Arta Moth 
Olive-and-black carpet 
Olive-shaded Bird-dropping Moth 
Omiodes basalticalis 
Omiodes tristrialis 
Omiza herois 
Omiza lycoraria