Two species? - Limits of the species concepts in the pygmy grasshoppers of the complex (Orthoptera, Tetrigidae).

Today, integrative taxonomy is often considered the gold standard when it comes to species recognition and delimitation. Using the complex, we here present a case where even integrative taxonomy may reach its limits. The complex consists of two morphs, and , which are easily distinguished by a single character, the length of the hind wing.