It was a Friday morning metamorphosis at Celina's West Elementary School as fourth-graders checked on their crop of mealybugs, which go from pupa stage, to yucky worm stage, to the grand finale - every body's friend, the grain beetle. Further good news: there are 275 different species of mealybugs in the U.S. Skyler Eyanson, left, and Devinn Vietor keep a close eye on these pesky little critters.