When the Christmas trees arrive in Hawaii, they are shaken to get the invasive species out.
This year, the state Department of Agriculture says about 10 percent of the first shipment of trees have invasive species.
Here's a closer look at one of the slugs from the trees.
Oregon Christmas Tree Yard
HDOA inspector Todd Kikuchi (left) and ODA inspector Gary Romehill check for insect pests after trees are shaken in Oregon to dislodge pests before loading in shipping containers.
Click here to read more about the first shipment of Christmas trees to Hawaii in 2013.
Chris Dwyer and CNN
Library of Congress
No email address was supplied by
To complete your registration on this site, please supply an address.
Please confirm or modify the email address to which you will have subscription offers sent.
For a more personalized experience, please supply the following optional information.