New research has found the venom of a false widow spider is far more potent than native species here.
The research from NUIG found its bite is 230 times more poisonous than the average Daddy Long-Legs.
The spider originated from the Canary Islands and was first found here in 1999, and its bite has led to some people being treated in hospital.
Wildlife expert and author Eanna Ni Lamhna says this research shows the threat it poses to native spiders in Ireland:
"Its venom is very much stronger than our poor dopes. So as a result in a stinging match the stronger weapon belongs to the false widows."
According to this research the false widow spiders are able to wipe out our native Irish spiders.