Antennæ they have, long and threadlike. And see, the knowing little eyes!
They seem to be anchored to the leaf.
Hold the leaf up to the light, and see if you can discover what they are doing.
Ah, see those mouth tubes firmly stuck into the leaf. There they stand all day long and suck out the juice.
Ned says he should think they would burst.
But they do not; they grow. And they also get rid of a large part of the superfluous sap in a curious way.
They use what they need to grow on, and the rest escapes from the insect's body in the form of "honey dew." It is a sweet liquid of which ants and bees are very fond.
What, John, you have heard that the aphids give out honey dew from two little horns near the tip of the abdomen?
Let us see if we can find these horns. Yes, we can see them plainly, and very plainly with a magnifying glass.