I \ D 1: X . 



.TJoloiliripfi hicolor. mistakon for tobacco thrips l.'i 



Aufliotltrips niger, mistaken for tobacco tbrips 13 



Arsenicals, ineffective against tobacco thrips 18 



Brasfica sp. (See Mustard.) 



Budworm, cultivation as remedy H! 



most injurious of tobacco insects in South in past G 



BiDfid biirsa-pastori)^. {See Shepherd's purse.) 



Cabbaije, I'ood plajit of 'I'hrips titbaci 12-13 



Cauliflower, food plant of 77u7/).s' fabaci 12-13 



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



Cocklebur, food plant of tobacco thrips 7,11 



Cultivation, remedy for tobacco in.sects 16 



Dewberry, food plant of tobacco thrips 7,11 



Dk-yphus minimus, on tobacco 6 



Eiithrips nicotiaiur. {See also Thrips, tobacco.) 



description of adult and stages 8-10 



tri^ici, nustaken for tobacco thrips_, 5, 12 



Flea-beetles, in tobacco fields 14 



Fungus, found on dead tobacco thri])s 14 



(Jelechia solaneUa^Phthoriinaa opcrctilella G 



Glucose and water, ineffective against tobacco thrips 18 



Grass, food plant of CiiirotJtrips crassiis 12, 13 



Grasshoppers, cultivation as remedy IG 



Iloruworm. cultivation as remedy IG 



Insect enemies of tobacco G 



thrips 14 



Insecticides, used in experimentation against tobacco thrips 17-18 



Irrigation, overhead, remedy for tobacco thrips IG 



.lohnson grass. (See Sorf/Jiuin halcpense.) 



Kerosene emulsion, remedy for tobacco thrips 18-21 



Leaf-miner. (See PhfJiorimfca operciilella.) 



Lime, ineffective against tobacco thrips 18 



Molasses, ineffective against tobacco thrips 18 



Mustard, food plant of tobacco thrips 7, 11 



■• Nikoteon," against tobacco thrips . 20 



Oats, food plant of .EoiuUirips hicolor and Anthoihrips niger 13 



Euthrips tritlei _• 12 



tobacco thrips 11 



Onion, food plant of Thrips tahiici : 12 



thrii)S. (See Thrips tabaci.) 



Orange, food plant of Euthrips tritici 12 



Phfhorimaa opcrculella, on tobacco G 



Rain, influence on tobacco thrii)s 13-14 



Rose-leaf insecticide, against tol)acco thrips 17 



23 



