Phrynotettix robertsi absonus Rehn, J.A.G. & H.J. Grant Jr., 1959

Rehn, J. A. G. & H. J. Grant Jr. 1959. An analysis of the tribes of the Romaleinae with special reference to their internal genitalia (Orthoptera: Acrididae). Transactions of the American Entomological Society (Trans. Amer. Entomol. Soc. ) 85:233-271