Why did the seed beetle's penis evolve to look like this?

One of the evolutionary consequences of sexual reproduction is that males have to compete with each other for females. But as a recent study published in Current Biology reveals, this competition doesn't necessarily stop after the mating is done. In the case of seed beetles, the presence of promiscuous females has… » 10/29/12 8:30am 10/29/12 8:30am

Beetles go on egg-stacking offensive against parasitic wasps

If seed beetles aren't careful, wasps will invade their eggs and have their own young kill the beetle larvae for nutrients. But these beetles aren't taking the threat lying down - they've developed an ingenious strategy to fight back. » 9/14/11 5:09pm 9/14/11 5:09pm