Leuctra ketamensis, a new species of Leuctridae from northern Africa (Insecta, Plecoptera)

Leuctra ketamensis sp. n. is described from Northern Africa. This species belongs to the Leuctra nigra group. The male is easily distinguished by a pair of characteristic sclerotized processes on abdominal tergite VI, the absence of sclerotized processes on other tergites, the absence of the specillum and the presence of a complex paraproctal system; the female is distinguished by a subgenital plate split into two parts separated by a membranous area.