i N I) E X 



Molothrips bicolor, mistaken for tobacco thrips__ __ „ __ 13 



Anthothrip8 niger, mistaken for tobacco thrips 1^. 



Arsenicals, ineffective against tobacco thrips __ — — I s 



Bra88u a sp. I 8t • Mustard. I 



Bndworm, cultivation as remedy l'"> 



most injurious of tobacco insects in Sooth in past 6 



Bursa bursa-pastoris. [Set Shepherd's purse.) 



Cabbage, food plant of Thrips tabaci __. __ 12-13 



Cauliflower, food plant of Thrips tabaci 12-13 



Chirothrips crassus, on grass, mistaken for tobacco thrips 12, 13 



Cocklebur, food plant of tobacco thrips 7.11 



Cultivation, remedy for tobacco insects 16 



Dewberry, food plant of tobacco thrips 7. 11 



Dicyphus minimus, on tobacco 6 



Euthrips nicotianw. (See also Thrips. tobacco.) 



description of adult and stages 8-10 



tri'ici. mistaken for tobacco thrips 5, 12 



Flea-beetles, in tobacco, fields 14 



Fungus, found on dead tobacco thrips 14 



hia 8olanella=Phthorim(Fa operculeUa •*, 



Glucose and water, ineffective against tobacco thrips__ is 



Grass, f< od plant of Chirothrips crassus 12, 13 



cultivation as remedy __ 16 



Hornworm, cultivation as remedy 1<; 



Insect enemies of tobacco <; 



thrips 14 



Insecticides, used in experimentation against tobacco thrips 17-18 



Irrigation, overhead, remedy for tobacco thrips 16 



Johnson grass. (See Sorghum halepense.) 



Kerosene emulsion, remedy for tobacco thrips 18—21 



Leaf-miner. (See Phthorim&a operculeUa.) 



Lime, ineffective against tobacco thrips is 



Molasses, ineffective against tobacco thrips is 



Mustard, food plant of tobacco thrips 7. 11 



" Nikoteen," against tobacco thrips 



Oats, food plant of /Eolothrips bicolor and Anthothrips niger 13 



Euthrips tritici li 1 



tobacco thrips 11 



Onion, food plant of Thrips tabaci 12 



thrips. i See Thrips tabaci. » 



Orange, food plant of Euthrips tritici . . _ _ 12 



Phthorimwa operculeUa, on tobacco 6 



Rain, influence on tobacco thrips 13 14 



Rose-leaf insecticide, against tobacco thrips 17 



