Pomona College Journal of Entomology 



463 



Solanum douglasii Dunl. (Nightsliade). 

 Trifidapliis radicicola (Essig) Del 

 Guer.-Essig, Po. Jr. Ent. I, 8, 

 1909. 

 Sonchus sp. 



Alacrosiplium sonchella Monell- 

 Clarke, Can. Ent. XXXV, 253, 

 1903. 

 Sonchus asper Vill. (Spiny-leaved Son- 

 chus). 

 Rhopalosiphum persicae Sulz.-David- 

 son, Jr. Ec. Ent. Ill, 378, 191O. 

 So?ichus oleraceus L. (Sow Thistle). 

 Macrosiphuni sonchella Monell- 

 Davidson, Jr. Ec. Ent. II, 304, 



1909. 

 Myzus persicae Sulz. -Davidson, Jr. 



Ec. Ent. II, 303, 1909- 

 Rhopalosiphum lactuca? Kalt. -David- 

 son, Jr. Ec. Ent. Ill, 378, 191O. 



Sorghum sp. 



Aphis maidis Fitch-Clarke, Can. Ent. 

 XXXV, 251, 1903. 



Sow Thistle see Sonchus oleraceus L. 



Sphaerostigma veitchianum (Hook) 

 Small. (Evening Primrose). 

 Aphis Oenothera Oestl. -Davidson, Jr. 

 Ec. Ent. Ill, 380, I9IO. 



Spiny-leaved Sonchus see Sonchus 

 asper Vill. 



Spiraea salicifolia L. 



Aphis spiraeella Schout.-Davidson in 

 litt. 



Spruce, False see Pseudotsuga doug- 

 lasii Carr. 



Sugar Beet see Beta vulgaris var. L. 



Sugar Maple see Acer saccharinum 

 Wang. 



Sweet Fennel see Foeniculum foenicu- 

 luni Karst. 



Sweet Pea see Lathyrus odoratus L. 



Sycamore see Platanus. 



Symphoricarpus racemosus (Snow- 

 berry). 

 Aphis albipes Oestl.-Davidson, Jr. 

 Ec. Ent. Ill, 376, 1910. 



Tilia sp. (Basswood). 



Eucallipterus tiliae (Linn.) Gill.- 

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

 1910. 



Tomato see Lycopersicum esculentum 

 Mill. 



Triticum sp. (Wheat). 



Aphis avenee Fabr. -Davidson, Jr. Ec. 

 Ent. Ill, 377, 1910. 



Tulip see Tulipa. 

 Tulipa sp. (Tulip). 



Maerosi))liuin tulipae Monell. -David- 

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

 Rliopalosi])hum tulipEe Thos. -David- 

 son, Jr. Ec. Ent. Ill, 377, 1910. 

 Ulmus sp. (Elm). 



Colopha ulmicola (Fitch) Monell- 



Davidson, Jr. Ec. Ent. II, 299, 



1909. 



Myzocallis ulmifolii (Monell)- 



Davidson, Jr. Ec. Ent. II, 301, 



^ 1909. 



Schizoneura americana Riley-Clarke, 

 Can. Ent. XXXV, 21.8, 1903. 

 Urtica holosericea Nutt. (Nettle). 



Macrosiphuni ulmariae (Schrk.) 

 Schout.-Davidson, Jr. Ec. Ent. II, 

 304, 1909. 

 Urtica ureiis L. (Nettle). 



Myzus persicfe Sulz. -Davidson in litt. 

 Valerian see J'aleriana. 

 Valeriana officianalis Linn. (Conium, 

 St. George's Herb, Garden Helio- 

 trope, Cat's Valerian). 

 Macrosiphum valerianic Clarke, Can. 

 Ent. XXXV, 25i, 1903. 

 Valley Live Oak see Quercus misli- 



seni A. DC. 

 Valley Oak see Quercus lobaia Nee. 

 Vetch see J'icia. 



Viburnum tinus L. (Laurustinus). 

 Aphis pomi De Geer-Davidson, Jr. 

 Ec. Ent. Ill, 377, 1910. 

 J'icia sativa L. (Vetch). 



Macrosiphum ulmarise (Schrk.) 

 Sehout.-Essig, PC. Jr. Ent. II, 

 338, 1910. 

 J'iola sp. (Violet). 



Rhopalosiphum violae Perg.-Essig, 

 PC. Jr. Ent. I, p. 4, 1909. 

 Vitis sp. (Grape). 

 § Phylloxera vastatrix Planchon-Dav- 

 idson, Jr. Ec. Ent. II, I909. 

 /';/;■* vinifera L. (Wild or English 

 Grape). 

 *Phynoxera vastatrix Planchon- 

 Hayne, Rept. C'al. Exp. Sta. p. 

 376, 1887-1895. 

 Watermelon see Citrullus vulgaris 



Schrad. 

 Wheat see Triticum. 



§.See Rhizaphls vastatrix Planch, in Syn- 

 onyms. 



•Recorded by Hayne as simply Phylloxera. 

 See Rhizaphis vastatrix PI. in Synonyms. 



