Multipurpose Glands. The Ankheg Queen's Acid Spray, Cement Spray, and Create Wall can only be used one at a time. Once one it used, it must recharge before any others can be used.

Multiattack. The Ankheg Queen makes 3 attacks. It can replace one attack with Acid Spray, Cement Spray, or Create Wall.

Bite. Melee Weapon Attack: +6 to hit, reach 10 ft., one target. Hit: 10 (2d6 + 3) slashing damage plus 7 (2d6) acid damage. If the target is a Large or smaller creature, it is grappled (escape DC 15). Until this grapple ends, the Ankheg Queen can bite only the grappled creature and has advantage on attack rolls to do so.

Acid Spray (Recharge 3-6). The Ankheg Queen spits acid in a line that is 30 feet long and 5 feet wide, provided that it has no creature grappled. Each creature in that line must make a DC 15 Dexterity saving throw, taking 14 (4d6) acid damage on a failed save, or half as much damage on a successful one.

Cement Spray (Recharge 3-6). The Ankheg Queen spits a quick drying cement in a line that is 30 feet long and 5 feet wide, provided that it has no creature grappled. Each creature in that line must make a DC 15 Dexterity saving throw or be restrained. A restrained creature can use an action to break free with a DC 15 Strength Check.

Create Wall (Recharge 3-6). The Ankheg Queen uses her cement spit to create a temporary stone wall. The wall is 5 feet high, 1 foot thick, and 15 feet long. Each 5 foot section can be attacked (AC 10, 15 HP). The wall crumbles after an hour.