What do male pusher flies give their girlfriends during mating games? Detailed answer

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What do male pusher flies give their girlfriends during mating games? Detailed answer

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What do male pusher flies give their girlfriends during mating games?

Pusher flies, like many other insects, have a mating ritual: before mating, the male presents the insect he has caught to the female. And while she eats it, the male can fertilize the female without fear. In one of the North American species, the male does not just give an insect, but wraps it in a beautiful white ball. And the males of the Mauritanian pusher weave a fluttering veil, into which something edible is not even always woven.

Authors: Jimmy Wales, Larry Sanger

Random interesting fact from the Great Encyclopedia:

Are there identical fingerprints?

In movies, on TV, in books, there are often situations when a person leaves his fingerprints on something. Then they are discovered, and this proves that it was he who was in that place. There can be no mistake. And why, we will now explain to you.

If you look at the pads of your fingers, you will see a network of small grooves. They contain our skin's touch receptors. Each person has his own pattern of these lines (imprint), which cannot be changed. If you burn the skin of the fingertips several times, then the same print will still appear during healing!

Fingerprints have several characteristics. But there are no people for whom they would completely coincide.

An expert can easily identify one hundred different characteristics of a print. This means that it has a hundred distinct groove patterns. Take, for example, the index finger. In order to find two people whose index finger prints matched at least only two of these characteristics, we need to examine 16 people, for three - already 64.

Continuing this procedure, we finally want to know how many people it takes to find two prints that match in all one hundred characteristics. In this case, we must examine all the people in the world who have only lived during 4 billion years! But this is only for one fingerprint! But we have 10 of them.

It is truly a miracle of nature that each of us has our own unique fingerprint that does not change throughout our lives.

Test your knowledge! Did you know...

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