Onthophagus leai 
Onthophagus lemur 
Onymacris rugatipennis 
Opatroides punctulatus 
Opatrum sabulosum 
Opatrum verrucosum 
Ophonus azureus 
Ophonus incisus 
Ophraella conferta 
Opilo variipes 
Opsilia coerulescens 
Orange black tortoise beetle 
Orange Ladybird 
Orange Oides Leaf Beetle 
Orange-black Leaf Cylinder Beetle 
Orange-shouldered Leaf Miner 
Orange-spotted Ladybird 
Orange-spotted Scaphidium 
Orchestes pilosus 
Orchestes quercus 
Orchestes rusci 
Oreodera advena 
Oreodera omissa 
Oriental beetle