(a) Except under circumstance constituting sexual abuse of a minor in the first or second degree as defined by W.S. 6-2-314 and 6-2-315, an actor commits the crime of sexual abuse of a minor in the third degree if:
(i) Being seventeen (17) years of age or older, the actor engages in sexual contact with a victim who is thirteen (13) through fifteen (15) years of age, and the victim is at least four (4) years younger than the actor;
(ii) Being twenty (20) years of age or older, the actor engages in sexual intrusion with a victim who is either sixteen (16) or seventeen (17) years of age, and the victim is at least four (4) years younger than the actor, and the actor occupies a position of authority in relation to the victim;
(iii) Being less than sixteen (16) years of age, the actor inflicts sexual intrusion on a victim who is less than thirteen (13) years of age, and the victim is at least three (3) years younger than the actor; or (iv) Being seventeen (17) years of age or older, the actor knowingly takes immodest, immoral or indecent liberties with a victim who is less than seventeen (17) years of age and the victim is at least four (4) years younger than the actor.
(b) A person convicted under subsection (a) of this section is subject to imprisonment for not more than fifteen (15) years.
(c) A person charged with violating the provisions of paragraph (a)(iii) of this section shall be subject to the original jurisdiction of the juvenile court, except the matter may be transferred to the district court having jurisdiction of the offense as provided in W.S. 14-6-237.