Leafhopper species assigned to Ballana DeLong and Gloridonus Ball include nearly 15% of all endemic leafhoppers reported from arid regions of the southwestern USA and 29% of the leafhoppers considered to be endemic to California. Ballana is revised and subsumed within Gloridonus, the whole comprising 83 valid species: 10 belonging to the nominate subgenus Gloridonus, 56 restricted to the subgenus Ballana stat.nov. including 1 subspecies (B. brevidens curta DeLong) raised to species rank, leaving 15 species in the subgenus Laterana and 2 species in Gloridellus subg. nov. There are 42 new synonymies from among DeLong's species of Ballana described in 1937 and 1964 (quira  =  B. adversa DeLong, 1937; volsella  =  B. apta DeLong, 1964; letura, insula  =  B. angula DeLong, 1937; diversa, omani, paridens  =  B. arma DeLong, 1937; fatuita  = Thamnotettix atridorsum Van Duzee, 1894; tiaja  =  B. calcea DeLong, 1937; bicornis, profusa  = B. calipera DeLong, 1937; coarcta  =  B. callida DeLong, 1937; rara  =  Ballana [brevidens] curta DeLong, 1964; firma  =  B. delea DeLong, 1937; aleta  =  T. dissimilata Ball, 1910; clara  =  B. dola DeLong, 1964; mira  =  B. effusa DeLong, 1964; attenuata  =  B. filamenta DeLong, 1937; remissa  =  B. hebea DeLong, 1937; simplex, telora  =  B. indens DeLong, 1937; delta  =  B. nigridens DeLong, 1937; aperta, calcara  =  B. occidentalis DeLong, 1937; curvidens, orleta  =  B. polica DeLong, 1937; datuna  =  B. recurvata DeLong, 1937; mana  =  B. seca DeLong, 1937; sera  =  B. mera DeLong, 1937; parallela  =  B. spinosa DeLong, 1937; dira, extrana, repa  =  T. titusi Ball, 1910<