| Olinia ventosa |
|
| Ommatoiulus moreleti |
Portuguese Black Millipede; Button Worm; Portuguese Black Millipede |
| Oniscus asellus |
Common Shiny Woodlouse; Common Woodlouse |
| Oomyzus sokolowskii |
Parasitic Wasp |
| Oopelta aterrima |
Black Slug; Black Arion |
| Opacifrons coxata |
Lesser Dung Fly |
| Opeas hannense |
Dwarf Awlsnail |
| Ophiusa tirhaca |
Green Drab |
| Oplismenus hirtellus |
Brittle Basket Grass |
| Opogona omoscopa |
Detritus Moth; Rotting Wood Fungus Moth |
| Opogona sacchari |
Banana Moth |
| Opopaea concolor |
Goblin Spider |
| Oppia |
|
| Oppia varians |
Beetle Mite |
| Opuntia cochenillifera |
|
| Opuntia dillenii |
|
| Opuntia elatior |
Red Tungy; Red Prickly-Pear; Pest Prickly-Pear |
| Opuntia ficus-indica |
Mission Cactus; White Tungy; English Tungy; Common Prickly-Pear |
| Opuntia humifusa humifusa |
Smooth Prickly Pear; |
| Orchesella cincta |
Springtail |
| Orgilus lepidus |
Parasitic Wasp |
| Orgilus parcus |
Parasitic Wasp |
| Oribatula exilis exilis |
Beetle Mite |
| Origanum majorana |
Marjoram |
| Orius niger |
|
| Orius thripoborus |
Flower Bug |
| Ornithogalum pyramidale |
|
| Ornithonyssus bursa |
Starling Mite; Tropical Fowl Mite |
| Orthoperus atomarius |
Minute Fungus Beetle |
| Oryctolagus cuniculus |
European Rabbit |
