Pomona Colleok Joihxal ok Entomology 



461 



Pinus pinaster Ait. (ClusU-r Pine). 

 Pint-US pinicorticis (I'itcli) Sliini.- 

 IJnvidson, Jr. Kc. Kiit. II, 'jyy. 



lyoy. 



Pinus radiata Gord. (Moiitircy Pino). 



Essigclla californica (Essig) Dol. 



GuiT.-E.ssig, Po. Jr. Ent. I, \. 



1909. 



Lachnus pini-radiata* Uavidsun, Jr. 



Ec. Ent. II, 299. 1909. 

 .Mindarus abiotinus Koch.-Clarkf, 

 t an. Ent. XXXV. 2i8, iy(»:J. 

 Pinus sahiniana Dougl. (UiggtT or Sil- 

 ver Pino). 

 Laclinus pini-radiata- Davidson, Po. 

 Jr. Ent. Ill, 398, 1911- 

 Pisum sativum L. (Pt-a). 



Macrosiphuui ulmariir ( Solirk. ) 

 Sellout. -Essig, Po. Jr. Ent. 11, 

 .S.S8, lyio. 

 Pi.ANK Thkk soc Platanns. 

 Platanus orientalis L. (Oriental Plane 

 Tree). 

 Drepanosipliuni platanoides .Selirk.- 

 Davidson, Jr. Ee. Ent. III. .177. 



lyu). 



Pli'M see Prunus ilomeslica L. 

 Pli'M, CiHEEN Gaoe see Prunus do- 

 mestic a rar. cereola L. 

 Poison Hemlock sec Conium. 

 Poi'lar see Populus. 

 Populus sp. ( Poplar or Cottonwood). 

 Mel.'inoxantlieruni rufulus (David- 

 son) Schr.-Davidson. .Ir. Ec. Ent. 

 Ill, .S7(). 1910. 

 Melanoxantheruni salieeti (Harris) 

 Schr.-Davidson. .Ir. Ec. Ent. III. 

 .S75, lyio. 

 Pemphigus popnlicaulis Fitch-Dav- 

 idson. Jr. Ee. Ent. 11, 299, 1909- 

 Pemphigus populitransversns Riley- 

 Davidson. Jr. Ec. Ent. Ill, Sl'-i, 



lyio. 



Populus frrmontii Wats. 



C'haitopiiorus poiiulifolia- Fitch- 

 D.ividson, Jr. Ec. Ent. Ill, .S7">, 

 1910. 

 Pemphigus populimonilis Rilev- 

 Davidson, Jr. Ee. Ent. III. .S71. 

 1910. 

 Populus Irichocarpa T. & Ci. (Cotton- 

 wood ) . 

 Thoniasia populicola (Tlios.) Wil- 

 son-Essig, P. C. Jr. Ent. I, 99, 

 1909. 



Penipliigiis popnlicaulis Fitch-Dav- 

 idson. .Ir. Ee. Ent. II, 'jyy. lyoy. 



Penipiiigus populieonduplifolius Cow- 

 en-Davidson, Jr. Ec. Ent. Ill, 

 .•f7l, 1910. 

 Polifiionum sp. 



Ithopalosiplium nvniphc« (L) Koch- 

 Davidson, Jr. Ec. Ent. Ill, 377, 

 1910. 

 Priiuus armeniaca I.. (Ajiricot). 



Hvalopterus arundinis Fabr.-Clarke, 

 Can. Ent. XXXV, 219, 1903. 

 Prunus domcslica I.. (Pluui). 



.\phis persicii'-niger Sraith-Clarkr, 



Can. Ent. X.X.W, 252, 1903. 

 1 1\ .ilopterus arundinis Fabr.-Fowler, 

 Hep. Cal. Exp. Sta. Pt. I, p. 78, 

 1899- 1 900. 

 .Myzus |)ersica' Sulz. -Davidson, .Fr. 



Ec. Ent. II, 3(13, 1909. 

 Phorodon huniuli Sclirank-Davidson, 

 Jr. Ec. Ent. Ill, 380, 1910. 

 Prunus domestica var. cereola L. ((ireen 

 (jage Plum). 

 *.\pliis al:imedensis Clarke, Can. Ent. 



XXXV. 2.51, 1903. 



.My/.us eerasi (I'alir.) Buck.-Clarkc, 

 Can. Ent. .XXXV, 252, 1903. 

 Prunus persica IJ. & H. (Peach). 



.Vphis persicH'-niger Smith-Clarke, 



Can. Ent. XX.XV, 252, 1903. 

 Myzus persiea- Sulz. -Davidson, Jr. 

 Ec. Ent. Ill, 379, 1910. 

 Pseudutsuga douglasii Carr. (False 

 S|)ruce). 

 ffiillettea coweni (Gill.) Borner- 

 DavidsoM. Jr. Ee. Ent. Ill, 372, 



Pjirus communis L. (Pear). 



Aphis pomi (?) De Gccr- Davidson, 



Jr. Ec. Ent. II, 302, 1909- 

 Pyrus mali L. (Apple). 



Apiiis pomi De Geer- Fowler, Rep. 



Cal. Exp. Sta. Prt. I, p. 78, 1899- 



1900. 

 .\phis sorbi Kalt. -Clarke, Can. Ent. 



XXXV. 252. 1903. 

 Sehizoneura lanigera Haus. -Fowler, 



Rep. Cal. Exp. Sta., Pt. I. 82, 



1399-1900. 

 Qucrcus sp. (Oak). 



Sehizoneura querci Fitch-Clarkc, 



Can. Ent. XXXV, 218, 1903. 



*In description spelled Aphis alemedensls 

 Clarke. 



tChermes cooleyl var. coweni QlUette 



