Question: are tiny red spiders poisonous?
Answer: the supposed 'tiny red spider' is most likely a red velvet mite, which is harmless. this is a red velvet mite. ... No tiny spiders are dangerous, but as Ken said, you may be looking at a chigger or other kind of mite. One is a whirligig mite, which are fast-running predators, but they are not harmful to humans.