







When I got home from the brunch it was already dark. I took my shoes off and wondered into the dark sitting room when I suddenly felt something under my toes. I lifted my foot very swiftly, I knew it was a spider. When I turned the lights on I saw it was a Brazilian wandering spider. Ohh... I was so glad I had kept my socks on, lucky day! Without the socks they day could have had a different ending, probably a painful one.
The Brazilian wandering spider is aggressive and highly venomous. They have a distinctive defensive display in which the body is lifted up into an erect position, the first two pairs of legs are lifted high (revealing the conspicuous black-striped pattern on their underside), while the entire animal sways from side to side. There is where the name Armadeira originates from.
The venom contains a potent neurotixin which acts as a calcium channel blocker that inhibits glutamate release, calcium uptake and also glutamate uptake in neuronal synapses. At deadly concentrations, this neurotoxin causes loss of muscle control and breathing problems, resulting in paralysis and eventual alphyxiation.
It is a very dangerous spider, especially for kids, and one does need to be careful with all kind of spiders. However, I doubt this particular one would have had enough venom to cause me any more than a very painful bite.
It was a little adventure with a happy/painless ending(for me);) The spider was less lucky, it was "accidently" killed by a broom which happened to be hammering around.
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