How to tell if a stink bugs is pregnant?
Just like any other bug when stink bugs mate, the male deposits his "seed" into the female who then crawls to the underside of a leaf or something and pretty much pushes out the eggs. In her lifetime she can have anywhere from 400+ and that is a general estimate.
Assume that every stink bug is female and is about ready to burst with 1,000 more stink bug babies. Don't waste time examining these things. Regardless, of whether they are pregnant or not-they are living and that should not be.
Usually a sign that a bug is pregnant is that it may change colors or when you turn it over its abdomen is big and sometimes you can see the white eggs protruding out. I don't mean to "gross you out" but when one of these things is pregnant it tends to have an extreme urge to get outside and find a leaf, but they will lay their eggs anywhere they can including in your home, bed, refrigerator, closet, window seal etc.
If the abdomen of the next stink bug you kills oozes white stuff-it probably was pregnant.
If you see anything white and weeby in, at or around your home- get some insecticide and kill it. Its time we take back our homes from these bugs.
We found some pretty good information on the site: http://somethingscrawlinginmyhair.com/2007/06/04/stink-bug-sex/
For more information Visit Kill A Stink Bug Day