INDIANAPOLIS (AP) - A four-year legislative fight for a state insect that has been championed by elementary school students has taken a big step forward in the Indiana Statehouse.

The bill for the Say's firefly to become the state insect was approved Tuesday by the Senate. The bill now moves to the House.

Previous efforts in both chambers haven't made it out of committee hearings.

Eleven students from Cumberland and Happy Hollow elementary schools traveled to the Indiana Statehouse to argue their case for the Say's firefly late last month.

Student Kayla Xu has worked on the project since the 2014-15 school year. She told a Senate committee that choosing the insect would draw people from across the country to visit Indiana.