Summary Environmental chlamydiae are a diverse group of obligate intracellular bacteria related to well‐known pathogens of humans. To date, only very little is known about chlamydial species infecting arthropods. In this study, we used cocultivation with insect cells for recovery and maintenance of R habdochlamydia porcellionis , a parasite of the crustacean host P orcellio scaber . In vitro , the infection cycle of R . porcel...