Not sure how long ago you asked this but there is such a thing as a "vinegar spider". In the US which is where I live they're commonly found in desert areas such as Southern California and Arizona. In all honesty there are likely several varieties of spiders that are referred to as "vinegar" spiders because one of the effects of the venom is that your taste buds taste vinegar in all of your food and beverages for anywhere from a week to a month after being bitten. Most of the common spider species that cause this are NOT highly poisonous- that is the venom won't generally cause severe damage to or kill most healthy people regardless of age. When I lived on the edge of the Mojave, it seemed as though any especially scary looking spider had someone calling it a vinegar spider so I have no idea which ones actually caused the affect! Believe it or not there are not that many lethally venomous spiders in populated areas of the US. The adage that spiders are more afraid of us than we are of them pretty well holds true and they seem to avoid large mobile creatures they can't consume. ;>D
I couldn't find anything elaborate on it except that these are extremely poisonous spiders and it is always useful to kill them as soon as you see one.