522 
General Catalogue of the Homoptera 
[. Aphrophora ] alni Jensen-Haarup 1920a: 75; Figs. 40a-d [Key, de¬ 
scribed, illustrated] 2 - 37 - 95 
Aphrophora alni Matsumura 1920a: 351 [Described, economics] 74 
A [phrophora] alni Tullgren and Wahlgren 1920a: 142 [Notes] 1 
Aphrophora alni Buchner 1921a: 275 [Symbionts] 
Aphrophora spumaria [nec Linne] Buchner 1921a: 273, 275 [Symbionts] 
Aphrophora spumaria [nec Linne] Bugnion 1921a: 539 [Listed] 
Aphrophora spumaria [nec Linne] Fahringer 1922a: 300 [Ecology] 101 
Equals [Aphrophora] alni Fall. 
A [phrophora] alni Haupt 1922a: 21; Fig. 17 [Key, illustrated] 2 - 37 - 100 
Aphrophora alni MacGillavry 1922a: 69 [Listed] 27 
[Aphrophora] alni MacGillavry 1922c: xliii [Listed] 28 
Aphrophora spumaria [nec Linne] Stichel 1922a: 131 [Listed] 4 
Aphrophora alni Claus and Grobben 1923a: 659 [Listed] 2 
A [phrophora] alni Prohaska 1923a: 78 [Notes] 102 
Aphrophora spumaria [nec Linne] von Kirchner 1923a: 192, 281, 
297, 375, 398, 413, 572 [Economics] 4 
Cercopis alni Sherborn 1923a: 220 [Catalogued] 
Aphrophora alni Lindberg 1924a: 41 [Listed] 35 
Aphrophora spumaria [nec Linne] Buchner 1925a: 111, 114, 119, 125, 
153, 186, 206, 210, 212, 215, 217, 219, 233, 237, 239; PI. I, Figs. 
7-8; PI. Ill, Figs. 6-7; Text figs. 9-11 [Symbionts, illustrated] 
:90, 111, 233 Equals [Aphrophora] alni Fall. 
Aphrophora alni Buchner 1925a: 121 [Symbionts] 
Aphrophora spumaria [nec Linne] Della Beffa 1925a: 142 [Listed] 3 
[Aphrophora] alni Handlirsch 1925a: 1114 [Listed] 
A [phrophora] alni Haupt 1925a: 11 [Listed] 14 
Aphrophora spumaria [nec Linne] Hofmanner 1925a: 191 [Ecology] 24 
A [phrophora] alni Kupka 1925a: 104 [Food plants] 6 Equals [Aphro¬ 
phora] spumaria [nec Linne] 
A [phrophora] alni Singh-Pruthi 1925b: 200 [Listed] :201; PI. XXII, 
Fig. 172 [c? genitalia described, illustrated] 
Aphrophora alni Blote 1926b: 113 [Notes] 27 
[Aphrophora] alni Edwards 1926a: 52 [Key, food plants] 7 
Aphrophora alni Heymons 1926a: 161; 1 fig. [Notes, illustrated] 
Aphrophora alni Ivanov 1926a: 210, 211, 213, 216, 218, 220, 224 
[Morphology of reproductive system] 
A [phrophora] alni Remy-Perrier 1926a: 76 [Key] 6 Equals [Aphrophora] 
bifasciata Fabr. [nec Linne] 
A [phrophora] alni Wnukowsky 1926a: 66 (4) [Listed] 67 
Aphrophora alni Kusnezov 1927a: 257 [Listed] 65 - 103 
Aphrophora alni Leonardi 1927a: 27 [Food plants, catalogued] 2 - 3 
A [phrophora] bifasciata [nec Linn6] Perrier 1927a: 1318 [Listed] 
