[Loser]

Originally posted by Taera:
*lightbulb*
i know, a spider with a pair of wings instead of one pair of legs.

Arthropod physiology is different from vertebrate physiology in significant ways. If I recall correctly, arthropod wings did not develop from specialized limbs, but rather from specialized sections of carapace. Much the same way, a scorpion has eight legs, it's claws are overdeveloped mandibles.

As a side note, there are no flying arachnids. Though there are some sailing spinners and ballistic leapers, which could be close but is not powered flight.