Stachelreste

Stachelreste is a German term used in entomology and medical contexts to describe the fragment of a stinger left in the skin after a sting. It is most often associated with barbed stingers of hymenopterans such as honeybees and certain wasps, which can detach from the insect during stinging. When a stinger remains embedded, parts of the stinger and, in some cases, the attached venom apparatus may persist in tissue, creating a residual fragment known as a Stachelreste.

Mechanism: The stinger's barbs are designed to lodge in tissue; with enough force the stinger can break off, leaving a remaining fragment. The insect's muscles may continue to pump venom from the sac into the wound, prolonging exposure even after detachment. The residual fragment can contribute to local pain, swelling, and inflammation.

Medical relevance: If possible, remove the Stachelreste with clean tweezers or a blunt instrument, taking care to avoid squeezing the venom sac and releasing more venom. Clean the area and apply a cold compress for pain relief. Monitor for signs of infection or allergic reaction; seek medical attention for extensive swelling, breathing difficulties, or anaphylaxis. People with known severe allergies to insect stings should carry emergency treatment and seek advice from a clinician.

Etymology: Stachelreste derives from the German words Stachel (stinger) and Reste (remnants). The term is primarily used in German-language sources and discussions of insect stings.

See also: Bee sting, Wasp sting, Hymenoptera, First aid for stings.