A terrestrial insect is an insect that’s born on land, lives on land its entire life but accidentally gets into the water. Examples are grasshoppers, ants and beetles. Bream, sunfish, shell crackers, perch and other species of pan-fish thrive on terrestrial insects. Ants and beetles usually get washed into the water by heavily rain drainage. Grasshoppers usually get blown into the water by the wind or just happen to not realize where they are going to land when the make their short flights. Inchworms, called span worms, loopers, sour worms and many other names are moth larvae. They usually fall into the water from the limbs of bushes and trees that extend out over streams or the banks of lakes. When grasshoppers land on the water they usually float on the surface and kick their legs trying to get back to land. Ants float for a short time but end up sinking. Moth larvae usually begin to sink as soon as they hit the water.