Cercopoidea—Aphrophoridae 
35 
Ptyela 
Ptyelus 
[Ptyelus] (Ptyelus) 
Ptyelus 
Plinthacrus 
Ptyelus 
Ptyela 
Ptyelus 
Disconzi 1865a: 203 [Listed] 
Marshall 1865f: 55 [Described, review of species 
from Great Britain] :57 [Comparative note] 
Morris 1865a: 111 [Listed] 
Stal 1865b: 153 [New species from various regions] 
Bellevoye 1866a: 144 (32) [Listed] 
Marshall 1866k: 149, 150 [Comparative notes] 
StM 1866a: 67 [Key] :69 [Described] 
Dallas 1867a: 570, 571 [Comparative notes] 
Kirschbaum 1868b: 13 [Key] :64 [Key to species 
from Germany] 
Kirschbaum 1868b: 64 [Key, key to species from 
Germany] 
Lethierry 1869a: 355 [Comparative note] 
Stal 1869a: 15 [Listed] 
Dallas 1870a: 498 [Listed] 
Oshanin 1870a: 49 [Listed] 
Walker 1870b: 292 [New species from the Indian 
Archipelago] 
Walker 1870c: 2404 [Listed] 
Oshanin 1871b: 32 [Listed] 
Scott 1871c: 240 [Comparative note] 
Scott 187Id: 241 [Key, described, key to species 
from Great Britain] 
Provancher 1872b: 351 [A new species from Canada] 
Gerstaecker 1873a: 432 [Catalogued] Equals Plin¬ 
thacrus Spin. 
Marschall 1873a: 377 [Catalogued] 
Raddatz 1874a: 85 [A list of species from 
Mecklenburg] 
Rondani 1874a: 64 [Listed] 
Kittel 1875a: 4 [Ecology of species from Bavaria] 
Signoret 1877a: xxi [Notes] 
Glover 1878a: PL 1 [Listed] 
Reiber and Puton 1880a: 57 Equals Philaenus Stal 
[in part.] 
von Dalla Torre 1882a: 56 Equals Philaenus St&l 
[in part.] 
Heller and von Dalla Torre 1882a: 25 (18) Equals 
Philaenus Stal [in part.] 
Scudder 1882b: 271 [Listed] 
Brodie and White 1883a: 59 [Listed] 
