Cephalolobidae

Gregarinacean septorid gregarines, mature trophozoites fixed to stomach epithelium by a differentiation from the protomerite; this protoepimerite is dilated into a sucker and forms lobes which adhere closely to the stomach epithelium; association precocious, composed of a primite and one or two satellites, these last being placed side by side; in amphipod and decapod crustacea.