rhombogen

rhombogen

[′räm·bə·jən]
(invertebrate zoology)
A form of reproductive individual of the mesozoan order Dicyemida found in the sexually mature host which arises from nematogens and gives rise to free-swimming infusorigens.
References in periodicals archive ?
In the Dicyemida, two adult forms, the nematogen and the rhombogen, develop asexually from an agamete (axoblast) through a vermiform embryo within the axial cell of parent nematogens (Fig.