Stirge is a Tiny monstrosity with unaligned alignment and Challenge Rating 1/8 in the 2024 SRD. This stat block includes AC 13, 5 hit points, speeds, traits, and actions.
Proboscis - Melee Attack Roll: +5, reach 5 ft. Hit: 6 (1d6 + 3) Piercing damage, and the stirge attaches to the target. While attached, the stirge can’t make Proboscis attacks, and the target takes 5 (2d4) Necrotic damage at the start of each of the stirge’s turns. The stirge can detach itself by spending 5 feet of its movement. The target or a creature within 5 feet of it can detach the stirge as an action.