Couplet 174

174a:  Basal 3 ventrites connate; antenna with 11 antennomeres, submoniliform to triangular, filiform, serrate to subflabellate; cervical sclerites present

Mycteridae   p. 440

174b:  Two or no ventrites connate; antenna with 10-11 antennomeres, moniliform to capitate; cervical sclerites absent