Wilson-Vickery^List of Aphididae. 
127 
phlomoidea, Aphis Del Guercio, 1911. Redia, VII, p. 3 23. 
Verhascum phlomoides. 
phragmltidicola, Aphis Oestlund, 1886. Aphididae of Minnesota, 
p. 44. 
Phragmitis communis. 
*phyllophora, Chelymorpha Clarke, 1858. The Microscope, p. 112. 
Acer campestris. 
piceae, Cliermes Ratzeburg, 1844. Die Forst-Insecten, p. 204. 
Abies pectinata, Picea sp. 
picea Chermes Ratzeburg, var bouveri, Cholcdkcv&ky, 1903. Zool. 
Anz., XXVI, p. 259. 
Abies nobilis var. glauca. 
piceae, Lachnus Panzer, 1801. Fauna Insettorum Germanica Ini- 
ciae, XXVI, p. 22, fig. Aphis. 
Picea abies, P. alba. 
*piceae, Pemphigus (Hartig), 1857. Verhandl. d. Hils-Solllng- 
Forstvereins, Jahrg. 1856, pp. 52-57. Rhizomaria. 
Larix sp., Picea sp., Pinus sp. 
picealla, Macrosiphum Theobald, 1916. The Entomologist, XLIX, 
p. 146. 
Picea abies. 
piceicola, Lachiius Cholodkovsky, 189 6. Zool. Anz. XIX, p. 148. 
Picea abies. 
piceicola Lachnus var. viridescens, Cholodkovsky, 1896. Zool. 
Anz. XIX, p. 509. 
Picea abies. 
pichtae, Lachnus Mordwilko, 1895. Rah. Lab. Zool. Kab. Varch. 
Univ., p. 104. 
Abies pectinata. 
For description in German see Zool. Anz. XVIII, p. 103. 
picridis, Macrosiphum (Fabricius), 1775. Systema Entomologiae, 
p. 737. Aphis. 
Agrostemma githago, Cichorium endivia, C. intybus, Crepis biennis, 
C. capillaris, C. tectorum, Hieracium, murorum, H. pilosella, 
H. spondylium, H. sylvaticum, H. sylvestris, H. umbellatum, 
H. vulgatum, Hypochoeris sp., Juglans regia, Leontodon au- 
tumnalis, L. hispida, Picridum vulgare, Picris hieraciotdes, 
Taraxacum opcinale. 
