Goliath Beetle - Photo by Michelle at Montreal Bunny Flickr This beetle is the largest in the world, being found in Africa. They feed on fruit and sap as adults. When raised in captivity the young prefer protein foods like cat/dog food. They are 2 to 4 inches long and weigh 2to 4 oz. It would fit most of your palm and you would know it is there by weight at its biggest.
Six-Spotted Tiger Beetle (Cicindela sexguttata) by Slomoz: Commonly found in the woods of North America (from Minnesota and Ontario to Kentucky) they are characterized by overlappin white mandibles. They usually have 6 spots, but sometimes fewer or none at all! en.wikipedia.org/... #Six_Spotted_Tiger_Beetle