This species infects the intestinal tract of European lobsters (Homarus gammarus).
The mechanism by which the parasites enter the gastrointestinal tract of the lobster is not known this stage may (or may not) involve an intermediate host.
These gametocytes invade enterocytes and there undergo multiple divisions which are released into the lumen as microgametes.
The larger merozoites divide within the lumen of the gut twice giving rise to a four nucleated schizont.
The schizont divides into four macrogametocytes which then invade the cells of the gut wall where they mature into macrogametes.