When do the eggs of "Praying Mantis" hatch ?.?
Answers:
The natural life cycle of praying mantids is to eat and grow through the summer and then mate and lay eggs in a stiff foamy case in the fall. Adults die of old age or freezing, whichever comes first and the eggs persist through the winter (if the weather is mild) and repeat the cycle the following summer. There is only one generation per year. If you have or find a mantid egg case the recommended action is to keep it at winter temperatures in a box or jar in an unheated garage or porch. Do not keep it indoors or the eggs may hatch in January or February when there is no chance to release them outdoors. Bring the egg case in and begin watching for nymph emergence in about mid-May. Unfortunately, some eggs will never hatch. If the eggs do hatch it becomes a challenge to handle the sudden population explosion of tiny nymphs. They will be all right together for a day or two but then they will begin to eat each other. To maximize the number of survivors, nymphs need to be moved to separate cages, or more practically, scattered around the outdoor environment after a day of entertaining observation. Raising nymphs through to adult stage in captivity is incredibly difficult.
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