Family: Tetragnathidae
Spiders have 8 legs, 2 body parts and no antennae.
Longjawed spiders are called because their fangs (chelicerae) are as long or longer than their cephalathorax. All Tetragnathidae have 8 eyes. They are called orb weavers because they build a web which has a circular grid, although the spokes (radii) are not as many and the webs look a bit disorganized compared to regular orb weavers.
The spiders hatch from eggs in the spring and look like small adults, molting as they grow. They live for about 1 year, mating and laying eggs at the end of summer.
The genus Tetragnatha are often found near or over water, as the spider above was.
They do bite, but are not considered dangerous.
Womack Creek: A Paddler's Guide to the Flowering Plants 