CICADELLOIDEA — EUSCELIDAE 871 



Deltocephahis nigrifrons Swain 1936a : 52 [Listed] ' Equals 



Cicadula nigrifrons Forb. 

 Thamnotettix nigrifrons Wolcott 1936a: 85 [Food plants, 



catalogued] 30 

 Thamnotettix nigrifrons Blanton 1937a : 972 [Food plants] 

 [Unerus] nigrifrons De Long and Caldwell 1937c: 34 [Cata- 

 logued] 9 - 12, 28 

 Thamnotettix nigrifrons Meyer 1937a : 432 [Ecology] - 5 

 T [hamnotettix] nigrifrons Brimley 1938a : 96 [Listed] 5 

 Thamnotettix nigrifrons Stearns and Mac Creary 1938a : 227, 



228 [Listed] 45 

 Unerus nigrifrons Brown 1939a: 663, 667 [Economics] 23 - 30 

 Thamnotettix nigrifrons Glick 1939a: 26, 65 [Ecology] " 

 Unerus nigrifrons Osborn 1939a: 142; figs. 60a-f [Life his- 

 tory notes, economics, illustrated] 28 : 141, 142 Equals 

 Thamnotettix [nigrifrons Forb.] : 104 [Ecology] 14 : 141 

 [Comparative note] 

 Thamnotettix nigrifrons de Seabra 1939a: 84, 89 [Econom- 

 ics] 7 - 27 - 46 : 89 Equals Deltocephalus nigrifrons Forb. 

 Thamnotettix nigrifrons Brierley and Smith 1940a : 648 [Dis- 

 ease vector] 42 

 Thamnotettix nigrifrons Carpenter 1940a : 670 [Ecology] 

 Thamnotettix nigrifrons Elliott and Poos 1940a : 679 [Disease 



vector] 36 

 [Thamnotettix'] perpunctata Essig and Usinger 1940a : 165 



[Catalogued] 

 Thamnotettix nigrifrons Smith [F. F.] 1940a: 659 [Food 



plants] 36 

 Thamnotettix nigrifrons Padley 1941a : 394 [Listed] 12 

 Unerus nigrifrons Wene and Dominick 1941a : 123 [Listed] 3C 

 Graminella nigrifrons Medler 1943a: 110; pi. IV, fig. 12; pi. 

 VII, fig. 6 [Described, illustrated, key, catalogued] 54 

 Equals Cicadula nigrifrons Forb. 

 Thamnotettix nigrifrons Milne and Milne 1944b : 60 [Reaction 



to light] 36 

 Thamnotettix nigrifrons Smith, Ditman, and Goodhue 1945a : 



195 [Economics] 10 

 [Graminella] nigrifrons De Long and Knull 1946a: 61 [Cata- 

 logued] 9 - 12 - 28 Equals Cicadula [nigrifrons Forb.] 

 Thamnotettix nigrifrons Steinhaus 1946a : 177 [Parasites] 

 Graminella nigrifrons Dowdy 1947a: 429 [Ecology] :!1 

 Graminella nigrifrons Oman 1947a: 184 [Catalogued] 4 - 5 - 1 



