A sunlit spider

A spider of, I think, the family Tetragnathidae: the long-jawed orb weavers.  I’m basing this primarily on very basic morphology as well as behaviour I observed…at one point, it rested by flattening itself on the branch, extending its long, slender legs both anteriorly and posteriorly.   This behaviour is apparently common to the family.  Pretty, delicate and quite active on this warm(ish), sunny day.

Edited to add: Spider guy in my lab confirmed it as a Tetragnathid!