Melainotettix Gunther 1939

Genus group Melainotettix nov. Diagnosis. Body usually black. In frontal view, vertex with C-shaped carinae. Dorsal margins of the antennal grooves positioned at the lower third of the compound eyes. In dorsal view, vertex slightly indrawn. Pronotal discus wavy, with several depressions. Lateral lobes of the pronotum projected sidewards. Prozonal carinae present or reduced. Legs smooth and elongated, without tubercles or teeth. Hind femur with a concavity just before the hind knee. Composition and distribution. Two genera endemic to Mindanao (Hirrius Bolívar, 1887 and Arulenus Stål, 1877), one monotypic genus endemic to northern Sulawesi (Guentheracris gen. nov., described here) and two genera endemic to Papua (Camelotettix Hancock, 1907 and Melainotettix Günther, 1939). Possibly, Parahirrius gen. nov. also belongs to this group.