The big garden mantids, including the Chinese mantis naturalised across North America, and the one genus in the order that trades as much in egg cases as in animals.
Mantid rules whole: annual lifespan, moulting height, flying prey, nymphs over adults. An ootheca is a hundred mantises with a hatch date, which is the genus's distinctive product and its own management problem.
Agricultural ooth supply keeps this the most abundantly available mantis lineage on the continent, seasonally and permanently, and the market prices accordingly: near the floor that farm-scale production enforces, with the hobby premium reserved for named nymphs. A year of the most-watched insect in the garden, sold by the season.