They have some type of special coating on them that is tough enough for them to withstand extreme winters.
Praying mantids are insects and lay egg sacs. There is no live birth involved.
they are big enought to eat many spiders and makes a perfect match for spidera with it`speed but cannot eat big spiders like taurantulas or bird eating spiders
I'm not 100% sure, but I am quite positive that they do not. The egg-sacs are hardened a few hours after being created, and they don't move. Praying mantises only eat moving insects. It would be same to assume they would see the sac as simply a rock.
Yes, the female can lay infertile egg-sacs. Generally, if one has owned a mantis for a very long time, say 2 months or so, with no contact to male specimens or the outdoors, then she is most likely infertile. Usually they lay eggs about 1-3 weeks after being fertilized.
No. They are adapted to winter temperatures. You can place them in a sheltered area outdoors. Do not bring them inside (or one fine morning you will find your house infested by hundreds of baby mantids)
vacuole's are storage sacs
vacuole's are storage sacs
suicide sacs suicide sacs
air sacs
The bronchi continue to divide into smaller and smaller branches until they end in air sacs. The air sacs in the lungs are called alveoli.
The color of your air sacs are a peach color.
'trois sacs' means 'three bags' in French.