CICADELLOIDEA — CICADELLIDAE 437 



[Empoasca (Hebata)] rohusta De Long and Knull 1946a: 

 71 To [Empoasca (Hebata)] nigra Gill, and Bak. 



[Empoasca (Hebata) nigra'] robusta Oman 1949a : 86 [Cata- 

 logued] To [Empoasca (Hebata)] nigra 



[Empoasca (Hebata)] robusta Oman 1949a: 86 [Cata- 

 logued] To [Empoasca (Hebata)] nigra 



Localities : * California. ^ Pacific Coast States. ^ District of Columbia. 

 * Texas. 



nigra var. typhlocyboides Gillette and Baker 



Empoasca typhlocyboides Gillette and Baker 1895a: 110; 2 



figs. [n. sp., ilustrated, food plants]^ 

 [Empoasca nigroscuta] typhlocyboids [sic] Gillette 1898a: 



740 [Described, food plants, catalogued]^ Equals Em- 

 poasca typhlocyboids [sic] Gill, and Bak. 

 Empoasca nigroscuta typhlocyboids [sic] Gillette 1898c: 31 



[Listed] 

 [Empoasca] typhlocyboides Van Duzee 1916a : 76 [Listed] 

 [Empoasca nigroscuta] typhlocyboides Van Duzee 1917b: 



705 [Catalogued] ^'2 

 [Empoasca] typhlocyboides Ball 1921a: 23 [Comparative 



notes] 

 Empoasca nigroscuta typhocyboides [sic] Severin 1921c: 23 



[Listed] 3 

 Empoasca nigroscuta typhlocyboids [sic] Hartzell 1923a: 



109; pi. IV, figs. 19a-d [Described, illustrated, food 



plants]^' 3 

 Empoasca [(Hebata)] nigra typhlocyboides De Long 1931b: 



32 [Key] : 33; fig. 8 [Described, illustrated, cata- 

 logued]^' 2' * Equals Empoasca typhlocyboides Equals 



E[mpoasca] robusta : 57 Equals [Empoasca (Hebata)] 



robusta Gill. 

 [Empoasca (Kybos) nigra] typhlocyboides De Long 1931b: 



34 [Comparative notes] 

 E[mpoasca] nigra typhlocyboides Knowlton 1935a: 112 



[Listed] 2 

 [Empoasca] typhlocyboides Osborn 1935a : 187 [Comparative 



notes] 

 [Empoasca nigra] typhlocyboides De Long and Caldwell 



1937c: 63 [Catalogued] i- ^ Equals [Empoasca] robusta 



Gill. 

 [Empoasca (Hebata) nigra] typhlocyboides De Long and 



Knull 1946a: 71 [Catalogued]^- ' 



