Locust Lancers drop Scabarite notes.
Bring plenty of food (lobsters or better) because you'll be fighting these things in a multi-combat area. Bring rune armour or better, guthans is recommended because you can heal.
Bouncy, but not fun
Clue scroll (level-3), Rune sq shield, Runite bars, Rune warhammer, Rune 2h sword
Coins, Blood rune (7), Adamant arrows (24), Rune arrows (9), Grimy herbs, Adamant kiteshield, Rune battleaxe, Lava runes (20-37), Battlestaff, Meat pizza, Desert goat horn (3), Scabarite notes