Cercopoidea—Aphrophoridae 
443 
Leonard 1928a: 145 [List of species from New York] 
Schmidt 1928b: 112 [Catalogued] Equals Cercopis 
Lall. [in part.] 
Walley 1928a: 184 [Review of species from the 
Nearctic Region] 
Borner 1929a: 113; Fig. 2 [Morphology of mouth- 
parts, illustrated] 
Haupt 1929c: 223 [Key] 
Luigioni 1929a: 217 (19) [List of species from Italy] 
Buchner 1930a: 509 [Symbionts] 
Doering 1930a: 53 [Listed] :58 [Key, described, key 
to species from the Nearctic Region, zoogeogra¬ 
phy, catalogued] Equals Lepyronia Fitch [in 
part.] Equals Cercopis Lall. [in part.] Equals 
Ptyelus Walk, [in part.] 
Doering 1930b: 99 [Comparative note] :101 [Morph¬ 
ology of genitalia] 
Hansen 1930a: 218, 224, 225; PI. X, Figs. 12a-c 
[Morphology of mouth parts illustrated] 
Imms 1930a: 356 [Listed] 
Johnson 1930a: 32 [List of species from Massa¬ 
chusetts] 
Lallemand 1930a: 187 [Comparative note] 
Weber 1930a: 244 [Listed] 
Donge and Estiot 1931a: XCV [Notes] 
Riley 1931a: 253, 254 [Notes] 
Rostrup and Thomsen 1931a: 89 [Ecology] 
Weber 1931a: 77, 98 [Morphology] 
Brues and Melander 1932a: 111; Fig. 166 [Illus¬ 
trated] 
Enderlein 1932a: 193 [Key] 
Kuznezov 1932b: 163 [Comparative note] 
Pawlik 1933a: 234 (1) [Listed] 
Regnier 1933a: 646 [Economics] 
Weber 1933a: 658 [Listed] 
Acloque 1934a: 400; PI. 161, Fig. A [Key, illus¬ 
trated, key to species from France] 
Ball 1934c: 175 [Notes, key to species] 
Imms 1934a: 374 [Listed] 
Metcalf and Horton 1934a: 370 [Catalogued] To 
Cercopis [error]: 399 [Key] :410 [Described, key 
