What a cool spider! I once met a grad student who was working on this genus. The males have two drastically different color forms. This is the black one. There is also a drab grey one. Each morph has its own courtship dance! The grad student had designed video experiments (yes, the spiders can see so well they recognized the video image) that paired the dance of one morph with the body of the other, to see how the females would react. The suspense is still killing me, too:-) The whole thing was called "M-TV" for "Maevia TV!"