The African fruit fly is rough in love,
The male uses his organ like a sword;
Its rough edges will cut as it does shove
Into the partner he chooses to board.
Some females have evolved a way to skirt
These unromantic gestures from their kin;
By cross-dressing as males they can avert
The injuries from unwanted lovin’.
The males are darker than their counterparts,
So some females evolved to be more tanned.
And whilst these specimens clearly have smarts,
It only works if others fill demand.
And so some lighter females still exist,
As evolution is a twisted kiss.

An audio version of this poem can be heard here.
Did you know that fruit flies are actively used in biological research and that such research is so important that already 5 Nobel Prizes were awarded for it? If you want to know more, click here.