The members of this genus are large (25–70 mm) and usually brown or black. All members of the genus
Prionus have twelve or more strongly toothed or even flabellate
antennomeres on their large
antennae. The only species present in England is "the tanner",
Prionus coriarius (
Linnaeus,
1758). Common North American species include the "tile-horned prionus",
Prionus imbricornis, the "California root borer",
Prionus californicus, and the "broad-necked root borer",
Prionus laticollis. ==Biology==