General Catalogue of the Homoptera 
364 
Ph[ilaenus\ spum[arius] ustulatus Haupt 1917b: 178 To Philaenus 
graminis De G. 
[Philaenus leucophthalmus] ustulatus Van Duzee 1917b: 515 [Cata¬ 
logued] Equals Cercopis [ustulata] Fall. 
Philaneus [sic] leucophthalmus ustulatus Ball 1919d: 145 [Comparative 
note] 
P[hilaenus\ leucopthalmus [sic] astulatus [sic] Downes 1919a: 13 [Listed] 26 
[Philaenus graminis] ustulata Haupt 1919a: 171 [Key] 
[.Philaenus spumarius] ustulatus Jensen-Haarup 1920a: 79 [Key] 
[Philaenus leucophthalmus] ustulatus Moore 1920a: 23 [Listed] 27 
[Philaenus spumarius] ustulata Haupt 1922a: 27; Fig. 14 [Key, il¬ 
lustrated] 
[Philaenus spumarius] ustulatus Lindberg 1923a: 43 [Comparative 
note] 28 
[Philaenus leucophthalmus] ustulatas [sic] Prohaska 1923a: 79 [Notes] 29 
P[hilaenus] spumarius ustulatus Stearns 1923a: 225 [Described] :226 
[Listed] 30 
[Philaenus leucophthalmus] maculatus Hofmanner 1924a: 47, 76 
[Ecology] 31 :47 Equals [Philaenus] xanthocephalus von Schrank :68 
[Listed] 31 
[Philaenus leucophthalmus] ustulatus Hofmanner 1924a: 48, 71, 76 
[Ecology] 31 :68 [Listed] 31 
[Philaenus spumarius] ustulata Lindberg 1924a: 8 [Listed] 
[Philaenus leucophthalmus] maculata Kupka 1925a: 105 [Listed] 32 
1 Philaenus leucophthalmus] ustulatus Coker 1926a: 29 [Listed] 33 
[Philaenus leucophthalmus] ustulatus Downes 1927a: 16 [Listed] 26 
[Philaenus spumarius] ustulatus Johnson 1927a: 38 [Listed] 34,35 
P[hilaenus] leucopthalmus [sic] ulstulatus [sic] Leonard 1928a: 146 
[Listed] 36 
[Philaenus] leucophthalmus ustulatus Walley 1929a: 156 [Key] 
[Philaenus leucophthalmus] ustulatus Britten 1930a: 71 [Listed] 37 
[Philaenus leucophthahnus] ustulatus Doering 1930b: 96 [Taxonomy] 
:99 [Comparative note] 
Philaenus leucophthalmus maculatus Zangheri 1930a: 49 [Listed] 12 
[Philaenus spumarius] ustulatus Driggers and Pepper 1935a: 1 [Eco¬ 
nomics] 38 
P[hilaenus spumarius] ustulatus Halbert 1935a: 308 [Listed] 39 
[Philaenus spumarius] ustulata Haupt 1935a: 158; Fig. 290, No. 14 
[Illustrated] 
[Ptyelus graminis] ustulata Regnier 1936a: 96 (6) [Key] 
[Ptyelus graminis] maculata Regnier 1936a: 95 (5) To [Ptyelus graminis] 
xanthocephala von Schrank 
