[quote=John Savage]In rec.gardens.edible, "Farmer Joe" writes:
I got a praying Mantid egg case and put it on my Cux trelles April
10....I live in zone 5-6 St Louis MO area. Its been real warm
lately. Saturday I saw 12-15 babies around the case. I got a few to
go onto spoons and put them on Brox plants. I sawa a few others
later....but Sunday I see no more.....Is this the deal?? Do they all
hatch on one day and then....poof? Educate me. Madison, IL
weather report. 64f soil temp 65f. Thanks Farmer Joe

Praying mantis emerge and clamber over each other to make a chain that hangs off the case, this drifts back and forth in the breeze and they drop off off getting a bit of dispersal this way, so it's a case of first out last off :-) Naturally this necessitates them all emerging together.