The butterfly rearing process starts with farmers catching a few female butterflies and transferring them to an enclosure where they can lay eggs on host plants.

CNN: Butterfly farmers help protect threatened forests

You can import monarchs, but they won't lay eggs because there's nothing for their progeny to eat.

CNN: Make your garden pet-friendly

After they mate, the females lay eggs in trees and the adults die.

NPR: Roar of the Cicada

Female sturgeon don't become sexually mature until their 20s and spawn about every four years, so the spawning season, in which they surface from the depths to lay their eggs on rocky shores, is an extremely important time for the species.

WSJ: Standing Guard for the Sturgeon

Female cicadas have to be careful when they choose a tree in which to lay their eggs.

ECONOMIST: The 17-year cicadas are about to emerge in force

When that happens they all simultaneously mature, emerge, mate, lay eggs if female, and then die.

ECONOMIST: The 17-year cicadas are about to emerge in force

Researchers have hope for tiny parasitic wasps from Asia, which scientists are studying to see if they can be hungrily effective if introduced in the U.S. The wasps lay their eggs within the stink bugs' own egg masses.

WSJ: Out of Odor: Offensive-Smelling Bugs Put U.S. Farmers on the Defensive