172 MISCELLANEOUS STUDIES 



Primrose, Evening, see Oenothera 

 Primula (cowslip) 



56. Amphorophora latysiphon Davidson 

 Prune, see Prunus 

 Prunus (almond, apricot, cherry, nectarine, peach, plum, prune) 



107. Aphis alamedensis Clarke 



114. Aphis cardui Linn. 



117. Aphis cerasifoliae Fitch 



138. Aphis persicae-niger Smith 

 140. Aphis prunorum Dobr. 



153. Eyalopterus arundinis (Fabr. 



87. Myzus cerasi (Fabr.) 



98. Phorodon humuli (Schrank) 

 104. Bhopalosiphum persicae (Sulz.) 

 156. Siphocoryne nymphaeae (Linn.) 

 Pseudotsuga (Douglas fir) 



178. Chermes cooleyi Gillette 



43. Essigella californica (Essig) 



51. Lachnus pseudotsuga Wilson 



53. Lachnus taxifolia Swain 

 171. Prociphilus venafuscus Patch 

 Psorales (leather root) 



74. Macrosiphum pisi (Kalt.) 

 Pteris (brake) 



75. Macrosiphum pteridis Wilson 

 Punica (pomegranate) 



123. Aphis gossypii Glover 

 Pumpkin, see Cucur~blta 

 Pyrus (apple, pear) 



123. Aphis gossypii Glover 



129. Aphis malifoliae Fitch 



139. Aphis pomi De Geer 



175. Eriosoma languinosa Hartig (pyricola B. & D.) 

 174. Eriosoma lanigerum (Hausman) 

 Quercus (oak) 



5. Drepanaphis acerifolii (Fitch) (T) 



14. Myzocallis bellus (Walsh) 



15. Myzocallis castanicola Baker (davidsoni Swain) 



17. Myzocallis discolor (Monell) 



18. Myzocallis punctatus (Monell) 



19. Myzocallis californicus Baker (maureri Swain) 

 21. Myzocallis quercus (Kalt.) 



3. Phyllaphis quercicola Baker 



36. Symydobius agrifoliae Essig 



37. Symydobius chrysolepis Swain 

 177. Vacuna dryophila Schrank (f) 



Quince, see Cydonia 

 Eadish, see Eaphanus 

 Eagweed, see Ambrosia 

 Ramona (black sage) 



142. Aphis ramona Swain 



