How long does it take for mantis to hatch?

Mantis eggs typically take about 3 to 6 weeks to hatch, depending on factors such as temperature and humidity. Once the eggs are laid, they develop within an egg case called an ootheca. Warmer temperatures can accelerate the hatching process, while cooler conditions may prolong it. After hatching, the young mantises, known as nymphs, emerge and are miniature versions of adults.