This is among the most primitive or historical relatives of cockroaches. This relatives has one particular genus and only ten species or much less. These are found in rotten logs in the United States, Korea, China, and Russia. They may be reddish brown and both sexes are wingless as adults. https://danteypysk.creacionblog.com/29228340/types-of-cockroaches-in-northern-california-for-dummies