Utah Code Title 76. Utah Criminal Code § 76-5-401.2. Unlawful sexual conduct with a 16- or 17-year-old

(i) seven or more years older but less than 10 years older than the minor at the time of the sexual conduct engages in any conduct listed in Subsection (2)(b), and the individual knew or reasonably should have known the age of the minor;  or

(ii) 10 or more years older than the minor at the time of the sexual conduct and engages in any conduct listed in Subsection (2)(b).

(i) has sexual intercourse with the minor;

(ii) engages in any sexual act with the minor involving the genitals of one individual and the mouth or anus of another individual, regardless of the sex of either participant;

(iii) causes the penetration, however slight, of the genital or anal opening of the minor by any foreign object, substance, instrument, or device, including a part of the human body, with the intent to cause substantial emotional or bodily pain to any individual or with the intent to arouse or gratify the sexual desire of any individual, regardless of the sex of any participant;  or

(iv) touches the anus, buttocks, pubic area, or any part of the genitals of the minor, or touches the breast of a female minor, or otherwise takes indecent liberties with the minor, with the intent to cause substantial emotional or bodily pain to any individual or with the intent to arouse or gratify the sexual desire of any individual regardless of the sex of any participant.

(a)(i) rape, in violation of Section 76-5-402;

(ii) object rape, in violation of Section 76-5-402.2;

(iii) forcible sodomy, in violation of Section 76-5-403;

(iv) forcible sexual abuse, in violation of Section 76-5-404;  or

(v) aggravated sexual assault, in violation of Section 76-5-405;  or