Crane flies are not spiders, venomous, or even carnivores. They have six legs, live for about a week, and can't fly for shit. They're about as threatening as... well I don't even need a simile. Crane flies are already the least threatening winged thing alive.
Same goes for
Harvestman, the other thing everyone erroneously refers to as a spider. It is not capable of hurting humans, and they don't even have venom glands.