The Nature of Things

We know about the relationship between some butterflies and milkweed. Monarchs are the most famous example. But Queens also depend on milkweed. That dependence is related to the production of the next generations. Their caterpillars have to have milkweed to develop. Here is a Monarch cat. And here's the Queen caterpillar. But there are other insects that also love milkweed. For example, milkweed is like an aphid magnet, and where there are aphids, you are also sure to find the ladybugs that love to munch on them. There is another insect, though, that is so tied to milkweed that it even has the plant in its name. It is the milkweed bug ( Oncopeltus fasciatus ). The milkweed bug feeds on the leaves, stems, and seeds of milkweed and it bears the same orange and black colors as the butterflies that depend on milkweed. Those colors warn would-be predators that the insects contain toxins from the plants on which they feed.  Several of my milkweed plants currently have whole colonies of m...