We have a fine patch of milkweed in the back yard that attracts & nourishes the Monarch butterfly fleet. One of the plants also attracted a dense aphid population:

They’re pretty much featureless orange blobs, although the one on the edge of the leaf at the upper right does show off its legs & antennae:

Where are the ladybugs when you need them?
Did not know they are commercially available off-the-shelf components for debugging…
http://www.treehugger.com/lawn-garden/why-you-shouldnt-buy-ladybugs-natural-pest-control-your-garden.html
The ladybugs are all perfectly natural around here, although Mary does buy BT and nematodes by the bazillion …