Lord of the Rings Online Bestiary: Type - Swarm
| Name | Type | XP Level | Zone |
| Baleful Shadow-Wing | Swarm | 26, 27 | Fields of Fornost, North Downs |
| Baleful Willow-root | Swarm | 12, 13 | Bree-Land, Old Forest, Old Man Willow |
| Bed-bug | Swarm | 52 | Dolven-view, The Great Delving |
| Biting Field-Rat | Swarm | 14 | Bree-Land, Northern Barrow-Downs, Ringdor's Barrow |
| Black Fly | Swarm | 19, 20 | Bree-Land, Nan Harn |
| Bloated Muck-Crawler | Swarm | 29, 30 | Lone Land, Harleog |
| Buzzing Gnats | Swarm | 6 | Rushock Bog, Shire |
| Buzzing Lake Flies | Swarm | 40 | Men Erain, Evendim |
| Chittering Darkclaw | Swarm | 39, 40, 41 | High Moor, Trollshaws |
| Chittering Gloom-Wing | Swarm | 14 | Bree-Land, Willow Glade |
| Chittering Rock-Claw | Swarm | 16 | Bree-Land, Lone Land, Weather Hills |
| Corrupt Darkclaw | Swarm | 33 | South Trollshaws, Trollshaws |
| Craban | Swarm | 12, 13 | Bree-Land, Buckland |
| Craban Spy | Swarm | 17, 18 | Bree-Land, Far Chetwood |
| Creeping Oak-Root | Swarm | 13 | Bree-Land, Old Forest, Angerwood |
| Cruel Beak-Shrieker | Swarm | 35 | Fornost |
| Cruel-Beak Sentry | Swarm | 20, 21 | Greenway, North Downs |
| Cruel-Beak Spy | Swarm | 24 | Nan Wathren, North Downs |
| Dark-Wing Scout | Swarm | 48 | Eregion, Pend Eregion |
| Dark-wing Spy | Swarm | 50 | Eregion, Tâl Caradhras |
| Deadly Shadow Wing | Swarm | 31 | North Downs, Rhunenlad |
| Deadly Shadow-Wing | Swarm | 31 | Nan Amlug East, North Downs |
| Fell Oak-Root | Swarm | 16, 17 | Bree-Land, Forlorn Glade |
| Flittering Gloomwing | Swarm | 12 | Bree-Land, Old Forest |
| Foraging Shrew | Swarm | 8 | Hobbiton-Bywater, Shire, Tookland |
| Foul Wriggler | Swarm | 28 | Harloeg, Lone Land |
| Fungal Crawler | Swarm Crawler | 60 | Nud-melek, The Sixteenth Hall |
| Gore-Crow Lookout | Swarm | 18, 19 | Lone Land, Nain Enidh, Weather Hills |
| Gore-Crow Sentinel | Swarm | 24 | East-West Road, Lone Land |
| Gore-Crow Spotter | Swarm | 22, 23 | East-West Road, Lone Land, Haragmar |
| Grasping Hand | Swarm | 27 | Instance: The Red-Pass |
| Great Brown Bat | Swarm | 12 | Greenfields, Shire |
| Grimclaw Chill-Wind | Swarm | 9 | Low Lands, Rath Teraig, Ered Luin |
| Harassing Dark-claw | Swarm | 57 | Redhorn Lodes, Tumun-ghar |
| Hunting Craban | Swarm | 60 | Lothlórien |
| Hunting North-Hawk | Swarm | 28, 29 | Kingsfell, North Downs, Ost Lagoros |
| Large Barrow-Crawler | Swarm | 16 | Bree-Land, Southern Barrow-Downs |
| Masked Badger | Swarm | 6, 7 | Bree-Land, Chetwood |
| Midge Swarm | Swarm | 7 | Bree-Land, The Midgewater Marshes |
| Pecking Craban | Swarm | 18, 19 | Bree-Land, Nen Harn, Weather Hills |
| Pecking Dark-wing | Swarm | 48 | Eregion, Pend Eregion |
| Piercing Dark-claw | Swarm | 53 | Durin's Way, The Hall of the High Stair |
| Ravenous Hatchling | Swarm Spider | 59 | Instance: The Spider-nest |
| Sharp-Eye Lookout | Swarm | 20 | Lone Land, Weather Hills |
| Sharp-Eye Scout | Swarm | 18, 19 | Lone Land, Weather Hills, Weathertop |
| Shrieking Dark-claw | Swarm | 54, 55 | Zirakzigil, Durin's Way, The Bat Cave |
| Shrieking Gloom-Wing | Swarm | 13, 14 | Bree-Land, Old Forest |
| Slimy Leaf-Crawler | Swarm | 17 | Bree-Land, Old Forest |
| Slimy Marsh-crawler | Swarm Crawler | 10 | Instance: To a Ranger's Aid |
| Slimy Muck-Crawler | Swarm | 28, 29 | Lone Land, Harleog |
| Stinging Gnats | Swarm | 8 | Hobbiton-Bywater, Shire |
| Summoned Spinner | Swarm | 46 | Angmar |
| Swift Crag-Hawk | Swarm | 35, 36 | Bruinen Gorges, Trollshaws |
| Tainted Field-Rat | Swarm | 16 | Bree-Land, Northern Barrow-Downs, Southern Barrow-Downs |
| Tentacle | Swarm | 48 | The Black Pool, The Walls of Moria, Instance: The Watcher in the Water |
| Thieving Shrew | Swarm | 5, 6, 7 | Shire |
| Thorn-Talon Scout | Swarm | 15 | Lone Land, Weather Hills |
| Thorn-Talon Sentry | Swarm | 16, 17 | Lone Land, Weather Hills |
| Twisted Arm | Swarm | 32 | Lone Land, Garth Agarwen |
| Undergrowth Tangler | Swarm | 36 | Blooming Fens, Trollshaws |
| Vile Corpse-Rat | Swarm | 38 | Nan Tornaeth, Trollshaws, Ost Brandras |
| Wandering Cruel-Beak | Swarm | 22, 23 | Greenway, North Downs |
| Weak Pale-Folk | Swarm | 46 | Instance: The Gates of Carn Dum |
| Wild Bloodfang | Swarm | 48 | Angmar, Himbar |
| Wolverine | Swarm | 17 | Bree-Land, Bree-Fields, Chetwood, Far Chetwood |
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