Below you can find the Some of these insects are known as 17-year locusts because it takes 17 years for them to develop Jeopardy Words Answer. The answer to Some of these insects are known as 17-year locusts because it takes 17 years for them to develop has 7 letters. This clue belongs to the Insects category and is part of Jeopardy Word Level 1565. If you scroll near the bottom you will find other clues and answers part of level 1565