CICADELLOIDEA — EUSCELIDAE 1275 



Thamnotettix tvaldanus Osborn and Drake 1922a : 15 [List- 

 ed] " : 20 [Ecology] ' 

 Th[_amnotettix] tvaldana Sanders and De Long 1923a: 154 



[Comparative note] 

 T[}iamnotettix\ tvaldanus Buys 1924a: 71 [Listed] '^ 

 Thamnotettix waldanus Downes 1924a : 32 [Listed] ^ 

 Thamnotettix waldanus Downes 1927a : 19 [Listed] ^ 

 T [hamnotettix} tvaldanus Johnson 1927a: 36 [Listed] ^' ^ 

 Tlhamnotettix] tvaldatius Leonard 1928a: 170 [Listed] '^ 

 [Colladonus] tvaldanus De Long and Caldwell 1937c: 47 



[Catalogued] i' 2. 3. e 

 Tlhamnotettix] tvaldanus Procter 1938a: 80 [Listed] ^' ^ 

 Colladonus tvaldanus Medler 1943a: 106 [Described, key, 



catalogued] ^^ Equals Thamnotettix tvaldana Ball 

 [Colladonus] tvaldanus De Long and Knull 1946a : 57 i- 2- ^' ^ 



Equals Thamtiotettix [tvaldanus Ball] 

 C[olladonus'} tvaldanus Procter 1946a: 92 [Listed] ® 

 [Colladonus] tvaldanus Oman 1949a : 125 [Catalogued] ^^' ^^ 

 Equals Thamnotettix [tvaldanus Ball] 



Localities : ^ Colorado. - Ontario. ^ Maine. ' Northern States. 

 ° Canada. ® Manitoba. ^ New York. * British Columbia. 

 * Mount Desert Island. ^" Minnesota. " Northeastern States. 

 " Southwestern States. 



Genus Nigridonus Oman 



OmmOTYV^ Eutettix (Mesamia) illumina Oman 1949a: 125 



Nigridonus Oman 1949a: 125 [gen. n.] : 114 [gen. n., key] 



: 110; Text fig. 1 [Taxonomy illustrated] 



illuminus Ball 



Eutettix (Mesamia) illumina Ball 1909a : 80 [n. sp.] ^ 

 [Mesamia] illuminaYan Duzee 1916a: 69 [Listed] 2 

 Mesamia illumina Van Duzee 1917b : 629 [Catalogued] ^ 

 [Mesamia] illumina De Long and Caldwell 1937c : 20 [Cata- 

 logued] 1 

 [Aligia] illumina De Long and Knull 1946a: 47 [Catalogued] 



1 Equals Mesamia [illumina Ball] 

 [Nigridonus illuminus] Oman 1949a: 125 [Catalogued] ^ 

 Equals Eutettix {Mesamia) illumina Ball 



Localities : ' Arizona. - Southwestern States. 



