INDEX. 343 



Page. 



Vanessa io, host of Erycia ferruginea 92 



Tachina larvarum 90 



Tricholyga grandis 88, 92 



polychloros, host of Dexodes nigripes 88, 91 



Tachina larvarum 90 



urticse, host of Blepharidea vulgaris 91 



Compsilura concinnata 89 



Dexodes nigripes 88, 91 



Tachina larvarum 90 



xanthomelas, host of Blepharidea vulgaris 91 



Compsilura concinnata 89 



Varichaeta aldrichi, parasite of fall web worm (Hyphantria), adaptations in habits 



to host 203 



Vedalia cardinalis. (See Novius cardinalis.) 



Verania cardoni, enemy of Aleyrodes citri, attempted introduction into United 



States 46 



frenata, enemy of Perkinsiella saccharicida, introduction into Hawaiian 



Islands 35 



lineola, enemy of Perkinsiella saccharicida, introduction into Hawaiian 



Islands 35 



Weather conditions as affecting rate of increase of the gipsy moth 110 



factors in control of insects 107 



Web worm, fall (Hyphantria), host of Compsilura concinnata 224 



Meteorus versicolor 289 



Varichaeta aldrichi 203 



Perilampus hyalinus a secondary parasite 208-209 



studies in parasitism 104 



Weevil, cotton boll (Anthonomus grandis), control by transportation of para- 

 sites 21-22 



method of encouraging parasites ... 20 

 Wheat midge. (See Contarinia tritici.) 

 White fly of orange. (See Aleyrodes citri.) 

 Willow {see also Salix). 



food plant of gipsy moth 80 



"Wilt " disease of gipsy moth 97-102 



Yponomeuta evonymella, host of Tachina larvarum 90 



Zenillia libatrix 90 



padella, host of Compsilura concinnata 89 



Zenillia libatrix 90 



Zenillia fauna, parasite of brown-tail moth, recorded in literature 91 



recorded hosts 92 



libatrix, gross number colonized 310 



parasite of brown-tail moth in Europe, position in "sequence " . 136 

 introduction into United States, 



habits 302-303 



reared at laboratory 91 



recorded in literature 91 



gipsy moth, recorded in literature 88 



recorded hosts 90 



Zygxna achillex, host of Blepharidea vulgaris 91 



f.lipendulae ( ?), host of Blepharidea vulgaris 91 



Tachina latifrons 92 



janthina, host of Blepharidea vulgaris „ 91 



