Wyo. R. Prac. & P. 34
The court on motion of a defendant shall arrest judgment if the indictment, information or citation does not charge an offense or if the court was without jurisdiction of the offense charged. The motion in arrest of judgment shall be made within 10 days after verdict or finding of guilty, or after the plea of guilty or nolo contendere, or within such further time as the court may fix during the 10-day period. The motion shall be determined and an order entered within 10 days after such motion is filed and if not so entered it shall be deemed denied, unless within such 10 days the determination shall be continued by order of the court, but a continuance shall not extend the time to a day more than 30 days from the date the motion is filed.
Wyo. R. Prac. & P. 34