 Females deposit their egg capsules outdoors under bark of old logs, stumps and firewood. Females produce about 30 capsules containing up to 32 eggs each. The egg incubation period is about one month, with nymphs hatching in the summer and maturing the following spring (May or June). There is one generation per year and, in some cases, the life cycle takes two years. At dusk, males may begin taking short flights and are often seen in the headlights of the automobiles by persons driving through wooded areas. Woods cockroaches are active during the winter and can be found in firewood after pulling the bark away. These cockroaches are usually found in groups. Compared to domestic roaches, woods cockroaches are less likely to flee when approached and do not survive indoors. Overwintering occurs outdoors as a partially grown nymph. When disturbed, nymphs are active even in freezing weather. Adults are present May through early October.
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