THE PLUM CURCULIO. 
Page. 
Seasonal Mistry > = 2.252... sec ce hiec cece ee 23+ 525 eee ee eee eee eee 112 
Time -of appearance of beetles In spring: - .../ 2-2 eee see ee eee eee 112 
Relation of temperature to appearance of beetles.............---...-.-.-- 118 
Occurrence cf beetles in orchards... 2.2 2322 eeeee ee eee 120 
Number of generations annually : -\)..- So. eee 125 
Beetles from emergence to hibernation 2 72-- -. --- = eee eee 127 
Habemation.2-.:-t.2..0.< 5655 2-2 eee ee ee eee eee eee eee ee 129 
Mortality of the curculio during hibernation................----..---5--- 132 
Percentage of fruit punctured or infested by the plum curculio..............- 134 
Natural enemies... ..-< + .s.2..c ogee ee an ee ee eee oe ee ee eee 139 
Parasitic insects - . 2... 2.12.52 see sn eae ee eo eee eee eee 140 
(Anaphes) Anaphoidea conotracheli Girault..............-.---------- 140 
(Sigalphus) Triaspis cuneutionis Hikes. sae eee ee ee 142 
(Sigalphus) Triaspis curculionis var. rufus Riley.......-.-..---------- 146 
(Porizon) Thersilochus conotrachelivRuley. 6-~ 2s seer os aoe ee 147 
(Bracon) Microbracon melliton Say oe - oak ease ee eee 148 
Bracon: Qopsat Saye ee ee ee ee 148 
Other hymenopterous/ parasites... 22.2.2 3o- eae oo ee = ee 148 
Myiophasia-znea Wiedemann ...2.252 2032 en5- 6 de eee eee 149 
Cholomyia inxquipes Bigot ...---- ic dius 7 StS cheat eae Se een ee 150 
Pegomya fusciceps Lett. : ce eee ene ee ge 151 
Predaceous tasects esac. 225.522 me SSeS eR Oe toe ee aoe ee eee 152 
Fowls)and! birds as curculiodestroyersiear == ae fe oe eae eee 154 
Remedial measures. .322 23... 5.5. cb es ae ee ee ee ee eee reece 155 
Historical. 5.2662.56 bahcr0 see ie Seen eee ee eo ee ee eee 155 
Premiums for remedies for the curculio. .. . - BR RP an oe aS agi 167 
The Ransom:chipiprocess=s-e-eee eee ene aera Me Picata tes ise x 168 
Jarring forthe ‘curcttlio:.. 225° 25255: ca22 soe ae ee eee See ee ee 168 
Present.status: of jarring. 3s shee Stee co eee ame me seen a cree eee 172 
Cultivation-for' destruction’ of pupae: Saco ce see ee ee eee 176 
Spiayine wath arseniGals-: 30s 5 5-8 te oc cee Ge nee ce ee eee 178 
Beading experiments ‘with poisOns: 0 ---.2cm- cece 8 = ee 185 
Spisyine forthe curculio:on apple 2.25322. .-ceeece se - oe =- nee eee ee 189 
Early experiments...7..26.2222 5 he Shae Sees seamen nee 189 
Experiments by the Bureau of Entomology................--------- 193 
Bzperimenta at Anderson’, (Mo:'/ S02. 2-2 6e- 22a re eee 193 
Experiments in western New York and northwestern Pennsylvania. 195 
Experiments at Siloam Springs, Arks.2--- -ts sc 0 te soe ee eee 196 
Experiments my Virginia sssceee ss Ones ee a eee eee 197 
Experiments:at.St..Joseph, Mo... 22.2d22 5. See See ee ee 198 
Conclusidnsst .s2 356, eS sss at et ee eee . 200 
Scheme forspraying apple orchards... -2- 922.22. ees ee ee 201 
Spraying peaches’ with arsenicals.- <4. J... gee -2esc so el et 202 
Some results of spraying peaches for the curculio..............------ 208 
Directions for the preparation of self-boiled lime-sulphur wash. - ...-- 212 
Directions forse arsenate of leadeessssseeee eee ee 213 
Schedule of applications: .. ....:.-: 2. gece eee eee eee 214 
Midseason iarleties:,-’. ....-- 9. 7h cee eee ee ee eee 214 
Late varieties... 2... 0.235.422. ce See ee eee eee ere 214 
Barly ‘varieties’: z 2% nec 35> > (oso Se eee eee 214 
Spraying plums\and cherries... .......-.<...<--- eee ee eee ee 215 
Some results of spraying plums: .\.. . .. Sess eeeeeeee ee eerie ae 216 
Results of spraying cherries....¢ 22. 5. Soe see ee eee eee 218 
Ficonomic bibliography < 222.222.2225 6.0 2.0 5 eee 219 
foo ep: Cs eee agen eS Se Ape nn pee ee cee este es - knee a Ee ae es Sere 243 
