With bloated bellies and hairy legs, female flies try to look bigger to get food from courting mates. But male flies, in turn, have sharpened their eyesight to call their bluff. A new study suggests ...

An experienced fruit fly researcher can tell at a glance whether the fly she is observing is male or female; a distinct pigmentation pattern on a fly's body (a type of bristle found only on the legs ...

See more of our trusted coverage when you search. Prefer Newsweek on Google to see more of our trusted coverage when you search. In an evolutionary battle of the sexes, male fruit flies have sharpened ...

Sexual size differences are widespread in biology, yet the "how" behind them often remains vague. We asked a concrete question in a classic model organism: when female flies are larger than males, do ...

With bloated bellies and hairy legs, female flies try to look bigger to get food from courting mates. But male flies, in turn, have sharpened their eyesight to call their bluff. A new study by ...

The female receives a dead insect as a gift from the male during mating. The gift provides the female with the necessary protein to produce eggs. If the male arrives empty-handed, he is rejected. With ...