Bites

Melee Weapon Attack: +4 to hit, reach 0 ft., one target. Hit: 11 (2d10) piercing damage or 5 (1d10) piercing damage if the swarm is bloodied.

Venom

Melee Weapon Attack: +4 to hit, reach 0 ft., one target. Hit: 5 (2d4) piercing damage plus 7 (2d6) poison damage or 2 (1d4) piercing damage plus 3 (1d6) poison damage if the swarm is bloodied.