Death Burst. When the Acid Beetle drops to 0 hit points, all creatures within 10 feet of it must succeed on a DC 11 Constitution saving throw or be poisoned for 1 minute.

Tusk Stab. Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 6 (1d6 + 3) piercing damage. 

Acid Spray (Recharge 6). The Acid Beetle spits acid in a 15-foot cone. Each creature in that area must make a DC 11 Dexterity saving throw, taking 10 (3d6) acid damage on a failed save, or half as much damage on a successful one.