Here's a URL about ant-lions. It's claimed there that ant-lions are European, but not according to the biology teacher who showed us an ant-lion inverted sandhill. You can clearly see these hills in the pictures on the URL:

http://www.kendall-bioresearch.co.uk/neurop.htm#antlion

Edit: Additional information from a rather informal website--on it I read that ant-lions are referred to as "doodle bugs" in America. How American that does sound! Anyway, here's a quote from the site:

"Antlions are weak flyers as adults but are best known for the trap/pits the larvae, known as Doodlebugs in n. America dig and live in. The pits are dug in loose sand and as there name suggests there main food items are often ants. The larvae will interfere with any ant that looks like it might be getting out of the pit by flicking grains of sand at it to make it loose (sic) its footing and thus fall into the waiting larvae's jaws. There are about 2,000 species of antlions in the world."

http://www.earthlife.net/insects/neurop.html