WOOLLY APHIDB OF THE ELM. 283 



Phylloxera acantho-cJiermes KoUar (sub. Acantho-chermes quer- 



cus). Buckton, 4, p. 68. 

 Phylloxera coccinea Kalt. (Vacuna coccinea Heyden) (Ph. 



quercus Boyer). Passerini, 1863, p. 84. 

 Phylloxera coccinea Heyden. Buckton, 4, p. 68. 

 Phylloxera coccinea Heyd. (quercus Boyer). Kaltenbach, 1874, 



p. 677. 

 Phylloxera coccinea Heyden (quercus Balbiani nee Boyer). 



Schouteden, 1906a, p. 191. 

 Phylloxera rorticalis Kalt. Buckton, 4, p. 63, and Kaltenbach, 



1874, p. 677. 

 Phylloxera punctata Lichtenstein. Buckton, 4, pp. 68, 45. 

 Phylloxera punctata Licht. Lichtenstein, 1876, p. 12. 

 Phylloxera quercus Boyer (coccinea Passerini nee Heyden) (Bal- 



bianii Lichtenstein) (florentina Targioni-Tozzetti) (Lichten- 



steini Balbiani) (signoreti Targioni-Tozzetti). Schouteden, 



1906a, p. 191. 

 Ptcrochlorus longipes (Dufour) Pass. (A. roboris Boyer) (Pt. 



roboris Rond.) (Dryobius croaticus Koch). Passerini, 1863, 



p. 67. 

 Ptcrochlorus longipes Dufour (nee Buckton!"). (roboris Boyer) 



(croaticus Koch-Buckton) (? riparius Snellen van VoUen- 



hoven). Schouteden, 1906a, p. 208. 

 Pterchlorus roboris Linne. ( ? fasciatus Burmeister) (exsiccator 



Altum). Schouteden, I9c6a, p. 208. 

 Schizoncura lusitanica Horvath. Horvath, 1908, p. 132. 

 Stomaphis quercus (Linn) Del Guercio, 1907 (1908) Redia V, 



P- 344- 

 Thelaxes dryophila (Heyden) Westwood (Aphis dryophila Ratz). 

 (Vacuda Amyot) (Cinara quercus O. Mosley) Buckton, 4, 

 p. 10. 

 Vacuna dryophila Schrank (quercus Mosley) (quercicola West- 

 wood) Schouteden, I9c6a, p. 192. 

 Vacuna dryophila Schrank (Aphis). Ferrari, 1872, p. 85. 

 Q. rubra L. Red Oak. 



Callipterus bellus (Walsh). Oestlund, 1887, p. 44. 

 Callipterus quercifolii Thomas. Thomas, 1879, p. 113. 

 Myzocallis bella (Walsh). Gillette, 1910, p. 368. 

 Mysocallis walshii (Monell). Gillette, 1910, p. 368. 

 Q. serrata Thunb. 



Trichosiphum kuzvanae Pergande. Pergande, 1906, p. 209. 

 Trichosiphum pasaniae Okajima. Okajima, 1908, p. 2. 

 Q. sessilifolia Blume. 



Lachnus quercus (L.) Kalt. (A. fusca Geoffrey) (Phylloxera 



longirostris Boyer). Passerini, 1863, p. 65. 

 Phylloxera florentina Targ.-Toz. Lichtenstein, 1876, p. 12. 

 Q. suber. 



Dryaphis minor Del Guercio. Del Guercio, 1907 (1908) Redia 

 V, p. 345- 



