People sometimes rely on the stereotype of a kid living in their parents' basement to illustrate poor socialization and isolation.
But the basement-dwellers may be connected with others in ways that those who are "out in the world" might not. And that seems to be the case for a group of cave crickets.
Recently published research by a team of scientists found that a sub-genus (a group of species) of crickets, Ceuthophilus, which is known to venture out of caves, show a higher degree of genetic isolation than its cousins, Geotettix, who live strictly inside the caves.