It turns out that the notion is false on both counts. But a little clarification is needed.
According to entomologists at the University of California, Riverside, the term “daddy longlegs” is commonly used to refer to two distinct types of creatures: opilionids arachnids with pill-shape bodies and eight long legs that are actually not spiders, and pholcids, which have long legs and small bodies, and thus resemble opilionids, but which are true spiders.
Pholcids, or daddy long-legs spiders, are venomous predators, and although they never naturally bite people, their fangs are similar in structure to those of brown recluse spiders, and therefore can theoretically penetrate skin. For these reasons, “This is most probably the animal to which people refer when they tell the tale,” the entomologists assert.
But is pholcids’ venom extremely poisonous? Surprisingly, because they almost never bite, scientists have never bothered to conduct research to determine their venom’s toxicity to humans . In 2004, the Discovery Channel show “Mythbusters” stepped in to fill this knowledge void. The team set out to coax a daddy longlegs spider into biting the arm of the show’s co-host, Adam Savage.
Picture Credit : Google