Multiattack

The giant ant queen makes two bite attacks and one sting attack.

Bite

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) bludgeoning damage and the target is grappled (escape DC 13). Until this grapple ends, the target is restrained, and the giant ant can't bite a different target.

Sting

Melee Weapon Attack: +5 to hit, reach 5 ft., one target. Hit: 7 (1d8 + 3) piercing damage plus 22 (4d10) poison damage, or half as much poison damage with a successful DC 14 Constitution saving throw.