HOST INDEX. XXXI 



Walnut, English— Continued. Page. 



Sau Jose scale, Aspidiotus pcrniciosus 130 



Walnut mealy bug, Psciidococciis bakeri 99 



Walnut plant louse, Chromaphis jin/landicola 81 



Walnut scale, Aspidiotus juglans-regiw 129 



White peach scale, Aulacaspis pentngoiia 124 



Wandering Jew (Tradescaiitia sp.). 



Citrus mealy bug, Pseudococcus citri 102 



Watermelon (Citrullus vulgaris), see Melon. 



Black scale, Saissetia olew 119 



Striped cucumber beetle, Diabrotica vittata 230 



Wattle {Acacia melanoxylon) , see Acacia. 



Ked scale, Chrysomplialus aurantii 133 



Wheat {Triticum sp. ). 



Angoumois grain moth, Sitotroga cerealella 173 



Grasshoppers 16 



Hessian fly, Mayetiola destructor 245 



White Beam Tree, see Sorbus. 



Wild Pea {Lotus americanus). 



Bean thrips, Heliothrips fasciatus 30 



Willow {Salix sps. ). 



Citrus thrips, Euthrips citri 34 



Cottony cushion scale, Icerya purchasi 89 



Cottony maple scale, Pulvinaria vitis 111 



Greedy scale, Aspidiotus camelliw 127 



Orange tortrix, Tortrio! citrana 176 



Oyster shell scale, Lepidosaphes ulnii 139 



Parsnip louse, Hijadaphis pastiiiaccc 86 



Red scale, C'hrysomphalus aurantii 133 



San Jose scale, Aspidiotus pcrniciosus 130 



Spotless fall webworm, Uyphantria te-rtor 190 



White peach sale, Aulacaspis pcntagona 125 



Wire Grass {Pohjgoimiu arcicularc) . 



Beau thrips, Heliothrips fasciatus 30 



Yarrow {Achillea millcforuim). 



Beet louse. Pemphigus hctw 53 



Yew {Taxus sp.). 



Purple scale, Lepidosaphes hcckii 137 



Yucca sps. 



Diplacus ceroputo, C'croputo yurcw 96 



Ivy scale, Aspidiotus hederw 128 



Zamia sp. 



Hemispherical scale, Saissetia hemisphwrica 117 



Long-tailed mealy bug, Pseudococcus longispinus 106 



White peach scale, Aulacaspis pentagona 125 



Zinnia sp. 



Twelve-spotted cucumber beetle, Diahrotica soror 229 



