The family was expanded in 2002 by the synonymizing of several other proposed snakefly families. Cantabroraphidia is an extinct genus of snakefly in the family Mesoraphidiidae. Dichrostigma flavipes is a species of snakefly in the family Raphidiidae. Alavaraphidia is an extinct genus of snakefly in the family Mesoraphidiidae. Proraphidia is a genus of snakefly in the extinct family Mesoraphidiidae. The prothorax is notably elongated and mobile, giving the group its common name of snakefly.