Dear Jacob Kiss

The story probably goes something like this.

Millions of years ago there was a spider who was born with something different in her silk-making department. One of her silks was specially sticky.

Because this spider found it easy to catch flying insects with her sticky web she had plenty to eat. She laid plenty of eggs and most of her babies grew up to be just as good as her at catching flying insects.

And so on...for many generations of spiders. But that isn't the end of the story.

Meanwhile moths and butterflies were having a hard time of it. They were bigger than most flying insects, so there was plenty of them that could get caught on the spiders' sticky silk.

Some of the moths and butterflies had a little bit of fine powder on their wings. Sometimes the powder stuck on the web while the insect could escape.

More of these moths and butterflies lived long enough to lay eggs so their babies had a better chance of escaping from a spider's web, too. Over millions of years moths and butterflies produced more and more of this powder. (They needed to, because spider's webs were getting better and better, too.)

That's all I know about the matter. To find out more you will have to go to a library or ask an expert.

And I don't know the answer to your question about whether or not losing the powder from their wings makes it hard for moths and butterflies to fly.

Perhaps you could experiment and find our for yourself.

Yours sincerely 

Virginia R. Claire


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