Old School RuneScape Wiki

Harpie Bug Swarm icon.png

Harpie Bug Swarms are mid-level slayer monsters that require a Slayer level of 33 to kill. A lit bug lantern, which requires a Firemaking level of 33 to light, is required to kill these monsters (an unlit lantern will not work). If you do not have 33 Firemaking, you cannot be assigned Harpie Bug Swarms as a Slayer task.[1]

Harpie Bug Swarms should be an easy task for well-equipped mid-level players. Their abundance as well as the fact that they remain aggressive to players until level 93 combat makes this task very click-easy. However, Harpie Bug Swarms are very accurate, and will often hit for up to 6 hitpoints; thus, it is advisable to bring food appropriate for the player's level. Many may find lobsters suitable for the task. Defence levels beginning roughly in the late 40s or early 50s or higher will prove helpful in defending against this enemy.

It is recommended to bring nature runes while slaying this monster since it has many drops that can be alched to free up inventory spaces, and fire runes are frequently dropped from this monster.

There is a safespot behind a bush in between two trees on the south side of the area.


  • Northern shore of the Karamja mainland, just east of the dungeon.

The closest fairy ring is dkp. Although you will need to run south and use the shortcut to cross the river and then run north. Fairy ring ckr can also be used, though it's further to the south. Taking the former requires you to run past the Shaikahan and aggressive jogres before you can melee the swarms.

You can also use the Ardougne cloak's teleport to the monastery, run north-east to captain Barnaby, take the boat to Brimhaven and run south and east to reach the swarms.

You can also use a ring of dueling and take the Al Kharid gnome glider to the crashed Karamja one which is slightly slower than the fairy rings.

With 53 Agility, 21 Strength, 42 Ranged, and any crossbow and a mithril grapple, use the Karamja teleport option on a charged amulet of glory, run southwest, and use the grapple agility shortcut. This is faster than any other travel method, but losing an inventory space for the crossbow if not ranging (or the grapple if ranging) may not be appealing to some players.


Estimated drop rates are based off 1,000 kills.[2]


Item Quantity Rarity GE market price
Steel axe.png Steel axe 1 Uncommon (~1/32) 26
Steel full helm.png Steel full helm 1 Uncommon (~1/32) 146
Staff of fire.png Staff of fire 1 Uncommon (~3/128) 1,460
Mithril chainbody.png Mithril chainbody 1 Uncommon (~1/64) 884
Steel boots.png Steel boots 1 Rare (~1/128) 82
Adamant med helm.png Adamant med helm 1 Rare (~1/256) 938


Item Quantity Rarity GE market price
Fire rune.png Fire rune 30; 60; 120 Common (~5/32) 150–600
Chaos rune.png Chaos rune 15 Uncommon (~5/128) 1,335
Death rune.png Death rune 3 Uncommon (~1/64) 609


Item Quantity Rarity GE market price
Coins 250.png Coins 30; 40; 160; 230; 320; 490; 550 Common Not sold
Gold ore.png Gold ore 1 Common (~9/128) 206
Jug of wine.png Jug of wine 1 Uncommon (~1/64) 3
Gem drop table.png Gem drop table 1 Uncommon (~1/64) Not sold
Clue scroll (medium).png Clue scroll (medium) 1 Rare (1/128) Not sold

Gem drop table

In addition to the drops above, this monster approximately has a 2/128 chance to access the gem drop table.

Show/hide gem drop table
Item Quantity Rarity GE market price
Uncut sapphire.png Uncut sapphire 1 Rare
(1/256; 1/192)[G 1]
Uncut emerald.png Uncut emerald 1 Rare
(1/512; 1/384)[G 1]
Uncut ruby.png Uncut ruby 1 Very rare
(1/1,024; 1/768)[G 1]
Rare drop table talisman.png Unknown talisman
(please specify)
1 Very rare
(1/2,730.67; 1/2,048)[G 1]
Uncut diamond.png Uncut diamond 1 Very rare
(1/4,096; 1/3,072)[G 1]
Rune javelin.png Rune javelin 5 Very rare
(1/8,192; 1/6,144)[G 1]
Loop half of key.png Loop half of key 1 Very rare
(1/8,192; 1/6,144)[G 1]
Tooth half of key.png Tooth half of key 1 Very rare
(1/8,192; 1/6,144)[G 1]
Rune spear.png Rune spear 1 Very rare
(1/131,072; 1/11,520)[G 1]
Shield left half.png Shield left half 1 Very rare
(1/262,144; 1/23,040)[G 1]
Dragon spear.png Dragon spear 1 Very rare
(1/349,525.33; 1/30,720)[G 1]
  1. 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 1.10 The drop rate is increased when wearing a Ring of wealth.


  1. Jagex. Mod Ash's Twitter account. 1 Oct 2017. Mod Ash: "I think all three of the checks you list are still in effect on the creatures in question. Reducing requirements tends not to be popular."
  2. 1000 kills