Long-jawed Orbweavers belong to the huge family Tetragnathidae that contains about 1000 species worldwide. They are very common in meadows near water but also occupy many other niches.
Long and slender, they often stretch out along twigs or leaves for concealment.
Tetragnatha viridis
These three are from Florida.
Colors vary tremendously.
Tetragnatha sp.
showing its long jaws
just resting