False. Daddy longlegs don't have fangs nor venom. Daddy longlegs also don't make silk, so they can't spin webs to catch prey. Instead, these omnivores scavenge for small insects and spiders, alive or dead, and eat decomposing vegetable and animal matter.
Do daddy long legs make spider webs?
They do not produce silk so therefore they are never found in webs unless they are being eaten by spiders. Because they are found under logs and other stuff which people most often are not turning over, most folks don't run into daddy-longlegs very often.
Which kind of daddy long legs make webs?
True Daddy Longlegs
A spider has two parts: the head and the cephalothorax. Another noteworthy difference is that longlegs spiders produce silk to make webs. Longlegs harvestmen do not.