Yes male mantis can lay eggs. I have one and we found out it is a boy and he has layed an egg sack!!
NO - absolutely not
The praying mantis can lay 10 to 400 eggs.
Male birds do not lay eggs
No.
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.
about two hundred
about two hundred
The female crab lays the eggs, and not the male.
1 year old
12 to 200
A male stick insect will not lay eggs. However, a female stick insect is parthenogenetically, and can lay eggs without mating with a male.
So the male mantis doesn't eat the baby. Another possibility is that the female eats the male to sustain her protein levels during pregnancy thus increasing the likelihood of healthy nymphs.