Snakeflies are a group of insects comprising the order Raphidioptera, consisting of about 210 extant species. Together with theMegaloptera they were formerly placed within the Neuroptera, but now these two are generally regarded as separate orders.
Snakeflies are predatory, both as adults and larvae. They can be quite common throughout temperate Europe and Asia, but in North America occur exclusively in the Western United States, namely in the Rocky Mountains and westward, including the southwestern deserts.
Adult snakeflies are characterized by having an elongate prothorax but no modification of the forelegs (as in Mantispidae). They have strong and relatively unspecialised mouthparts, and large compound eyes. Some species also have ocelli. The females typically have a long ovipositor, which they use to deposit their eggs into crevices in bark or rotting wood. The wings are similar in size, with a primitive venation pattern, and a thickened costal margin (or “pterostigma”). – Wikipedia