Earlier this summer I found a few praying mantis egg cases, of both Mantis religiosa and Tenodera sinensis.  The Tenodera egg cases hatched and my friends and I raised some of the young for a while, however the Mantis egg cases never hatched. I’m not sure why – I never had much luck with these as a kid either!

I found this egg case already ripped open. You can see the eggs on the inside, surrounded by the foam of the case. Too bad they never turned into baby mantises. If you have raised european mantids before, have they required any special treatment (temperature, humidity) in order to hatch successfully?