👉 Plecopterans are a family of marine invertebrates that belong to the class Nematoda. They are characterized by their small size, which is often less than 1 millimeter (0.04 inches) in length, and their highly specialized structure consisting of a head, body, and tail. The plecopteran family was first described in 2013 by H. M. E. van der Meulen et al., who named them after the two