How To Look After Mantis Eggs. Attach the egg cases to a twig or plant about a foot or two off the ground where theres cover to protect the babies. The easiest way to heat your orchid mantis is through the use of a reptile-safe heat mat.
If not store the eggs in the fridge and let the weather warm up. She will deposit all eggs in a frothy liquid case one that protects the eggs not only from predators but also from extreme weather. If you do find one and want to watch the sac hatch place it in a glass or plastic jar with some air holes.
Praying Mantises are hemimetabolous.
Praying Mantis Egg Sack The female mantis can lay eggs either atop tall grass and plants or simply on the ground. The eggs are laid on surfaces such as firm leaves and stems. The female produces 100 to as many as 400 eggs only few days before winter. These are almost paper-thin heaters available in a broad range of different sizes.