Insecta · කෘමීන්
6 species| Photo | English | සිංහල | தமிழ் | Scientific name | IUCN | Endemic |
|---|---|---|---|---|---|---|
| Orange Migrant | — | — | Catopsilia scylla | — | ||
| Orange-Faced Sprite | — | — | Pseudagrion rubriceps | LC | — | |
| Orange-Tailed Marsh Dart | — | — | Ceriagrion cerinorubellum | LC | — | |
| Orange-Tipped Pea-Blue | — | — | Lacturnea lacturnus | — | ||
| Orangetail Awlet | — | — | Bibasis sena | — | ||
| Oriental Straight Swift | — | — | Parnara bada | — |
