The power to possess stingers.
The user possesses/uses natural or artificial poisonous stingers and may even be able to fire them out like bullets.
Suì-Fēng (Bleach) with her stinger Zanpakuto, Suzumebachi.
The stinger of the Glarghk Guhl Kashmas'nik demon (Buffy the Vampire Slayer) secretes a poison that induces extremely vivid hallucinations.
The Glarghk Guhl Kashmas'nik demon's stinger.
A Thorn demon (Charmed) spits stingers/thorns.
Zygons (Doctor Who) have Venomous stingers on their palms and tongues.
Frost (Dragon Ball Super) possesses poisonous stingers in his wrists, one that makes opponents drowsy, and one with acidic poison.
Scarlet Spider/Kaine (Marvel Comics) with stingers extended.
Shathra fires a stinger from her wrist.
Spider-Man (Marvel Comics) with stingers extended.
Lorna Templeton (Mutant X) possessed a lethal scorpion mutation.
Jefferson Starships (Supernatural) are the hybrids of several monsters including the Wraith and therefore possess some of the traits of Wraith including their retractable spike.
Wraith (Supernatural) possess a retractable wrist spike used to feed on a human's brain fluids.