Let's do Some Zoology!

hmmm… well the largest spider species is the Giant Huntsman Spider (Heterpoda maxima) and spiders can’t get much bigger than that because they rely on book lungs for respiration, and are limited by their exoskeleton. The spider I think you are talking about though is the Brazilian Wandering Spider (Genus Phoneutria) they are one of the most venomous spider species and are fairly aggressive, they are not black though nor are they giant they are pretty big though. If its not the Brazilian wandering spider it might be a Trapdoor Spider (Family Ctenizidae) they can be jet black and are known to attack anything that comes across their burrow. There is no spider species that can fly, spiders are classified by their venom and inability to fly, so if there was a spider that could fly it would not be a spider. However some moths have been known to mimic spiders in order to avoid being eaten. Spiders can’t fly but they can do one better, some (small) spider species are known to use their silk to create a type of balloon that allows them to float on air currents to reach other areas. I hope that clears anything spider related up.