[ref. ID; 2129]
The oral primordium originates in close contact with the ACR. The ACR commences anlagen formation at its posterior end and originates from two rightmost anlagen. One dorsal kinety develops from the right marginal row. More than one cirrus left of ACR. Usually two cirri right of ACR. Transverse cirri longitudinally arranged, usually originate from single anlage. Caudal cirri present. (ref. ID; 2129)