A new subfamily for Robsonius (Locustellidae)

Phylogenetic analysis has shown that the ground warblers (Robsonius) are the sister-group of all other species of Locustellidae, which in turn consists of two major clades. This suggests that three subfamilies may be recognised: Locustellinae new rank, comprising the genera Helopsaltes and Locustella, Megalurinae new rank, comprising the genera Poodytes, Malia, Cincloramphus, Megalurus, Elaphrornis, Schoenicola, Catriscus and Bradypterus, and another, monotypic subfamily comprising the genus Robsonius, for which we introduce the name Robsoniinae.