Sources
CR
Type
Size
Alignment
Movement

Hellwasp

Large Fiend, Lawful Evil

Armor Class 19 (natural armor)
Hit Points 52 (8d10 + 8)
Speed 10 ft., fly 60 ft. (hover)
STR
18
+4
DEX
15
+2
CON
12
+1
INT
10
+0
WIS
10
+0
CHA
7
-2
Saving Throws DEX +5, WIS +3
Damage Vulnerabilities cold
Damage Immunities fire
Senses darkvision 60 ft., passive Perception 10
Languages Infernal, telepathy 300 ft. (with other hellwasps only)
Challenge 5 (1,800 XP)

Traits

Magic Weapons. The hellwasp's weapon attacks are magical.

Actions

Multiattack. The hellwasp makes two attacks: one with its sting and one with its sword talons.

Sting. Melee Weapon Attack: +7 to hit, reach 5 ft., one creature. Hit:8 (1d8 + 4) piercing damage plus 7 (2d6) fire damage, and the target must succeed on a DC 12 Constitution saving throw or be poisoned for 1 minute. While poisoned in this way, the target is also paralyzed. The target can repeat the saving throw at the end of each of its turns, ending the effect on itself on a success.

Sword Talons. Melee Weapon Attack: +7 to hit, reach 5 ft., one target. Hit:11 (2d6 + 4) piercing damage.

Lore

A hellwasp is an intelligent, malevolent insect native to the Nine Hells. It has a thick protective carapace, thin metallic wings, and strong legs ending in swordlike talons. It uses its stinger to inject a chemical admixture similar to alchemist's fire into its victims. This same solution carries a paralytic enzyme that renders the victim helpless long enough for the hellwasp to grab its prey and flee.