I have a Hyacinth Bean vine in my yard. It has had a good year and looks great. But it's starting to cool off now in my area and perhaps that has weakened its defenses. The reason I say that is a swarm of aphids have arrived on that plant only. I'm not quick to act on such problems and I almost always let nature run its course in my yard, even with the fire ants most of the time. That's just my ethic for the yard. In any case, a nice side effect of me letting the aphids attack the vine is that they attracted a great number of lady bugs, which I have heard like to eat aphids. Here are some pictures.