In dixid and some culicid males, e.g. Verrallina, the median lobe of the phallosome located between the prosophallus and opisthophallus; supported by a sclerite, aedeagal sclerite, on either side which connects with the basal piece (in dixids) or the base of the prosophallic sclerite (in mosquitoes); bearing the aedeagus distally.
Adults: phallus