Tonks has been charged with Grade B striking on Ian Hardman in the 65th minute of the game between the Eagles and Rovers on Monday April 6.
Hardman has been charged with Grade A striking in the same incident.
Hardman has until 11am on Tuesday April 14 to submit an Early Guilty Plea (EGP).
Tonks does not have the option of submitting an EGP and will appear before an independent disciplinary tribunal next Tuesday evening.
Both players were charged after the incident was considered by the RFL Match Review Panel.