INDEX. 107 
Page. 
horus spp., status as pests ......... 9 .... : 14 
Spider red. (See Tetranychus bimaculatus.) 
ta virginica=Diacrisia virginica 59 
Spinach flea-beetle. (See Disonycha xanthomelxna.) 
food plant of Diabrotica balteata 77 
soror 73 
Disonycha mellicollis 29, 31 
Spraying against hop flea-beetle in poles — an impractical measure 55 
Squash, food plant of Diabrotica balteata 70, 77, 78 
picticornis 68 
soror 71 
trivittata 75 
vittata 82 
Diacrisia virginica 62 
Hubbard, food plant of Diabrotica picticornis 76 
Stdlaria media. (See Alsine [Stellaria] media.) 
Sticky shield against hop flea-beetle 48-49 
Sugar beets. (See Beets, sugar.) 
Sweet potato borer. (See Cyclas formicarius .) 
Syntomosphyrum sp., parasite of Acidia fratria 12 
Tachinids, enemies of Colorado potato beetle 3-4 
Tanager, scarlet, enemy of Colorado potato beetle 87 
Tanglefoot against hop flea-beetle 50-52 
Tarred boards against hop flea-beetle 34, 48-49 
sledges against hop flea-beetle 49-50 
Tetranychus bimaculatus on celery, lye-sulphur as remedy 64 
Thistle, Russian. (See Salsola tragus.) 
Thrush, hermit, enemy of Colorado potato beetle 87 
olive-backed, enemy of Colorado potato beetle 87 
wood, enemy of Colorado potato beetle 87 
Tobacco dust against hop flea-beetle 54 
Tomato bug, colloquial name for Diabrotica balteata in Texas 77 
food plant of Diabrotica balteata 77, 78 
Psylliodes punctulata 40, 41 
Traction power dust distributors against Colorado potato beetle 7 
sprayer against Colorado potato beetle 7-8 
Trap foods against hop flea-beetle 57 
lights against hop flea-beetle 57 
shelters against hop flea-beetle 57-58 
Traps against hop flea-beetle 57-58 
Trichobaris trinotata. (See Potato stalk weevil.) 
Trifolium pratense, food plant of Psylliodes punctulata 41 
Trogus exesorius, parasite of Papilio polyxenes 23 
exidianator, parasite of Papilio polyxenes 23 
Try petafratria= Acidia fratria 9, 11 
heraclei= Acidia heraclei 9 
liogaster considered by Thomson identical with Acidia fratria 9 
Turnip, food plant of Diabrotica balteata 77 
Diacrisia virginica 62 
Umbelliferous weeds, food plants of Papilio polyxenes 20 
Urtica dioica, food plant of Psylliodes punctulata 40 
Verbesina blossom, Diabrotica picticornis taken thereon 76 
encelioides, food plant of Diabrotica balteata 77 
