Only flies have true halteres. In fact, the scientific term for flies, 'diptera,' means 'two wings.' Most insects, including bees, have two pairs of wings for a total of four. In flies, the hindwing pairs have been transformed through evolution into the halteres.
Michael DickinsonRelated topics
evolution flies four means wingsRelated quotes
A foreign correspondent is someone who lives in foreign parts and corresponds, usually in the form of essays containing no new facts. Otherwise he's someone who flies around from hotel to hotel and thinks that the most interesting thing about any story is the fact that he has arrived to cover it.
Tom Stoppard
There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as the result of voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved.
Ludwig von Mises
The fact that we are all trained to be mothers from infancy on means that we are all trained to devote our lives to men, whether they are our sons or not; that we are all trained to force other women to exemplify the lack of qualities which characterizes the cultural construct of femininity.
Andrea Dworkin