One morning at the lake, T.S. was greeted by a really interesting looking bug on our "front porch" (that's what he called the area in front of the tent that had a tarp over it). We caught it to show everyone. Sadie later found another one on top of our "porch". Here is a picture with Sadie holding the bugs.
Robby looked them up and they are Long-horned Beetles that feed on tree bark, sap, leaves, etc. He found this really cool site called Bug Guide that helps you identify insects: http://bugguide.net/node/view/15740
After more research, we found out these are Cottonwood Borers--I think the name says it all. An interesting fact: the larvae of the Cottonwood Borers take 2-3 years to reach full maturity; they eat the inside of the tree bark while maturing.
If you are intersted, here is another insect ID site where you can read more: http://www.insectidentification.org/
Ziploc bag by morning. We put the bag in another bag and by afternoon they had one corner of the original bag torn out. Way cool!