Reproduction is cyclical with eggs produced in spring and early summer. Brood size varies according to the size of the female, but six to seven dozen is common. Eggs are about 0.04 in (1 mm) in diameter and deposited inside a capsule. The young emerge as second stadia about two months after the eggs are laid. Temperature can affect the timing of development and delay hatching by several months. The young may take several years to mature. Females have an active reproductive life of several years; half a dozen broods in a lifetime is not unusual. G. marginata can live as long as 11 years.
CONSERVATION STATUS Not listed by the IUCN.
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