176 MISCELLANEOUS STUDIES 



Typha (California tule) 



111. Aphis avenae Fabr. 

 153. Hyalopterus arundinis (Fabr.) 

 68. Macrosiphum granarium (Kirby) 



156. Siphocoryne nymphaeae (Linn.) 

 Ulmus (elm) 



28. Arctaphis populifolii (Essig) (?) 



172. .Colopha ulmicola (Fitch) 



173. Eriosoma americana (Eiley) 



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



174. Eriosoma lanigerum (Hausman) 



79. Macrosiphum solanifolii (Ashmead) 

 22. Myzocallis ulmifolii (Monell) 

 Umbellularia (California laurel) 



88. Myzus circumflexus (Buckton) 

 104. Ehopalosiphum pcrsicae (Sulz.) 



157. Siphocoryne pastinacae (Linn.) 

 Urtica (stinging nettle) 



121. Aphis euonomi Fabr. 

 Valerian, Bed, see Centranthus 

 Valeriana 



84. Macrosiphum valerianae (Clarke) 

 Vernonia (ironweed) 



123. Aphis gossypii Glover 

 Vetch, see Vicia 



Viburnum (lauristinus, snowball) 

 121. Aphis euonomi Fabr. 

 139. Aphis pomi De Geer 

 150. Aphis viburnicolens n.sp. 

 Vicia (horse bean, vetch) 



121. Aphis euonomi Fabr. (fabae Scop.) 

 131. Aphis medicaginis Koch 



74. Macrosiphum pisi (Kalt.) 

 Vigna (blackeye bean, cowpea) 



131. Aphis medicaginis Koch 

 Vineca (periwinkle) 



56. Amphorophora latysiphon Davidson 

 88. Myzus circumflexus (Buckton) 

 104. Ehopalosiphum persicae (Sulz.) 

 Viola (pansy, violet) 



58. Idiopterus nephrelepidis Davis 

 74. Macrosiphum pisi (Kalt.) 

 88. Myzus circumflexus (Buckton) 

 106. Ehopalosiphum violae Pergande 

 Vitis (grape) 



180. Phylloxera vitifoliae (Fitch) 

 Wallflower, ;,ee Cheiranthus 

 Wallflower, Western, see Erysimum 

 Walnut, see Juglans 

 Water hemlock, see Cicuta 

 Watermelon, see Citrullus 

 Water plantain, see Alisma 



