New and little known crickets from the collection of the Humboldt University and some other collections (Orthoptera: Grylloidea). Part I

Abstract. 2 new genera, 2 new subgenera, 20 new species, and 2 new subspecies of the subfamilies Itarinae, Grillomorphinae, and Gryllinae are described. 1generic and 2 specific names are resurrected from synonymy. New synonymies (2 generic and 4 specific) are established. Lectotypes of some species are designated. Redescriptions, descriptions of hitherto unknown females, new data on the systematic position and geographical distribution of several forms are given.