Aristocleidus

Genus of flatworms

Aristocleidus is a genus of monogeneans erected by Justus F. Mueller in 1936. The genus has been revised by Delane C. Kritsky and Edgar F. Mendoza–Franco in 2008. The amended generic diagnosis is: species with gonads overlapping, ventral anchors with deeply incised base forming deep and superficial roots, a coiled tube of the male copulatory organ in a clockwise orientation, and haptoral hooks with upright acute thumb, slender shank comprising one subunit and FH loop.

This keyword could refer to multiple things. Here are some suggestions: