brown-hooded cockroach

The brown-hooded cockroach (C. punctulatus) digests wood with the aid of certain protozoans in its digestive tract. It develops very slowly, attaining maturity after six or seven years.

…living roach, the subsocial, wood-eating Cryptocercus punctulatus, which lives in rotten logs, has affinities with the termites. Cryptocercus harbours symbiotic, cellulose-digesting protozoans of the same genera as those found in the hindgut of primitive termites. The genitalia and certain internal structures of Cryptocercus have basic anatomic resemblances to those of…