LETTER OF TRANSMITTAL. 
U. S. DEPARTMENT OF AGRICULTURE, 
Drviston or EntromMo.oey, 
Washington, D. C., July 18, 1900. 
Sir: I have the honor to transmit herewith a copy of an article contributed by me 
to the Yearbook for 1898, entitled ‘‘The Principal Insects Affecting the Tobacco 
Plant.’’ I have made some slight changes in it, so as to bring the matters treated up 
to date, and recommend that it be republished as a Farmers’ Bulletin. 
Respectfully, 
Hon. James Wixson, Secretary of Agriculture. 
CONTENTS. 
Thetobacco horn worms, oryhomblowers= 52-55 525 255s 
Remetlies . -. (2306.0 e och sd ce ee eee ee 
he wbud worms... 2552 sates cob ls nae eos oe wos sees eee 
REMEOVEN I) oo 2 esos Cee wer eae es Seige ate Sao ee eee 
he new tobacco bug;.or “sucky o>. 2 0020. 22. 5 a ee 
ReCMOMIES >: Sus. adace tones ote ee eee ee ee ote aoe ee 
Other sucking bugs:22222. 2-245) -eean ls cobs eee Sees eee 
The tobacco leai-miner, or “‘split worm". g22.. 22). 52 See eee ee 
ReMCHICSs 52 os -c3 hts s oes seve dh gis See ee ae ee ee 
CutwoOsts: sso 2.e. feel. sot ea ack tee ee ee oie Bee Se 
Otheritobacco leal-feeders. 2:2’... .io2) 2 ess ae ee a eee ee 
The cwaretie pectle =<. =<...) 2.52 aece Se ee a 
iremedies 2.5 hiss. hae sage ceils jnae Teese once ee eee Ue ae ee 
Other dusects injuring’ dried tobacco. 2:2 8 Fete ses eke eee 
Foreign tobacco insects which have not yet reached the United States____.._- 
Conelusions.: 22. occ 3 Ses oe eh 6 ae ae Se ee 
ILLUSTRATIONS. 
=) LE PUTe POTPUlG) =. oS Seg. a ook oe wie Aarts Be ae Rea ae er 
2. Tobacco leaves damaged by Epitriz parmila .........28...- 2222 teece 
3. Leaf spots of old tebaccodeaivc.: =: si2. eer. cAi ae eee 
. Northern tobacco worm, or ‘‘horn worm”? eee Céleus ea eee 
EG. 
. The true bud worm,’ (Aiehothis thems), 27-2 25026.5- eSa555 see 
8. False bud worm or cotton-boll worm (Heliothis armiger) .......------ 
9. Work of full-grown false bud worm in flower stem.....-...---.-..-- 
. Work of young false Sud worms 3s2 220 sot. ee eee ee eee 
. Work of ialse bad; worm in seed potis->5.- >i ate e* 2c eee 
é The *‘suck ily” .(Dieyphis.minimnas) 2232 aa beeen 
«| LUSCRISEUS VOTTOLATUONS 2 DE SSeS oe eos Poe eee oe 
14,- Tobacco split worm ::.<\rese¢ S202 eee eee Bae ere 
16.. Work. of aplit worm «. . 925255 2 Yeo ets ee ee ee 
LGPEP er ArOMiG SWUM Se See sein oes eaten eae San ae ee 
17. Agrotis ypsilon, one of the tobacco cutworms..-....--.-.-...-------- 
18, Agrotis Gnneta:.2L< ska eae een ee ee 
19. The cabbage plusia:< 2... 3.) eee ee ee ee 
20. Mamestra tegitinid=....io¢ 252s sceee es oe ee ae ee oe 
21. Thrips:tabact 222. oe ek ees ene soap ee ee eee 
22. Lima. campestris: . 6.52 baa ae ees eee Se ee 
3. Work of cigarette beetle .2 Bs Asay oes ee es 
24, The cigarette beetle... 2... Pi Ake ee eet eee 
25. The drug-store beetle jx. 20.50.2250) sn ecte bee kers aaee eee 
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L. O. Howarp, Entomologist. 




