m 
General Catalogue of the Homoptera 
[Philaenus spumarius] populi [nec Linne] Wnukowsky 1926a: 66 (4) 
[Listed] 36 
Ph[ilaenus\ spumarius populi [nec Linne] Kusnezov 1927a: 257 
[Listed] 13 * 37 
[Philaenus leucophthalmus] populi [nec Linne] Poisson and Poisson 
1927a: 134 [Ecology] 38 
Philaenus spumarius populi [nec Linne] Goidanich 1928a: 46, 62 
[Listed] 4 
[Philaenus spumarius] populi [nec Linne] Ivanov 1928b: 491 [Listed] 39 
[Philaenus spumarius] populi [nec Linne] Ivanov 1928c: 187 [Listed] 39 
[Philaenus spumarius] populi [nec Linne] Lallemand 1928d: 3 [Listed] 40 
Ph[ilaenus] sp[umarius] populi [nec Linne] Kusnezov 1929a: 309 
[Listed] 41 
[Philaenus spumarius] populi [nec Linne] Kusnezov 1929f: 32 [Listed] 
P[hilaenus] spumarius populi [nec Linne] Lindberg 1929b: 2 [Listed] 42 
[Philaenus leucophthalmus] populi [nec Linne] Luigioni 1929a: 217 (19) 
[Listed] 4 
[Philaenus leucophthalmus] populi [nec Linne] Britten 1930a: 71 
[Listed] 17 
[Philaenus spumarius] populi [nec Linne] de Seabra 1930b: 242 [Notes] 40 I 
Philaenus leucophthalmus populi [nec Linne] Zangheri 1930a: 50 I 
[Listed] 4 
[Philaenus spumarius] populi [nec Linne] Kato 1933b: Pl. 42 [Notes] I 
P[hilaenus spumarius] populi [nec Linne] Halbert 1935a: 309 [Listed] 43 I 
[Philaenus spumarius] populi [nec Linne] Haupt 1935a: 158; Fig. 290, 
No. 15 [Illustrated] 
[Philaenus leucophthalmus] populi [nec Linne] Karl 1935a: 135 [Listed] 44 
Philaenus spumarius populi [nec Linne] Werner 1935a: 294 [Listed] 45 
Philaenus spumarius populi [nec Linne] Lindberg and Zachvatkin 
1936a: 2 [Listed] 46 :11 [Catalogued] 46 
[Philaenus spumarius] populi [nec Linne] Nast 1936d: 485 (3) [Listed] 47 I 
[Ptyelus graminis] populi [nec Linne] Regnier 1936a: 97 (7) [Key] :98 
(8) [Notes] 
[Philaenus spumarius] populi [nec Linne] Nast 1938d: 226 (2) [Listed] 47 
Philaenus spumarius populi [nec Linne] Ossiannilsson 1938b: 67 
Equals [Cercopis spumaria] pallida Zett. 
Philaenus leucothalmus [sic] populi [nec Linne] Manns 1939a: 34 
[Listed] 48 
Philaenus spunarius [sic] populi [nec Linne] de Seabra 1939b: 33 I 
[Listed] 
Philaenus spumarius populi [nec Linne] de Seabra 1939b: 47, 85, 91, 
94, 102, 117 [Listed] 40 
