20 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
TaBLE XXII.—Transition to wintering larve in 1907. 
Number | Number 
Larvee forming cocoons under bands. pupat- | winter- 
ing. ing. 
MU ype 29: oe a eee cs eee Oe SOR AR CE ETIGAC a see Suis Neomea= eee see 112 1 
uly esAp ust b: soles t28 iene ne tee ehets lees soe cisisje ah e eicisomiee eee ete eet * 193 1 
August 5-12. ...... UE armen cee BEE ORE Rol eee ao See aie CD Sein ons aioe sea 144 4 
TAURUS WL 219 es ee ESN Bee Seas rl STE Sei cole eS Pee 121 36 
AMZ USEAOR=2G oc ce Meee Oe tees SEC ON See nilaatestte Se aioe a Rion arc yoicale i ere areas ee eee 50 46— 
ANVIZUSE OS EPLOM DEL 22s fe ss see oe Rie oe coe = Noa ore ee ae TOs ec E ES toeee 8 36 
September 2-95 oo oe ore B ecee NS Eee ete Upon a rane heer rae para ci e a Ue pee te  ea 0 52 
TasBLeE XXIII.—Transition to wintering larve in 1908. 
[From record made by Mr. 8. W. Foster.] 
Number | Number 
Larvee forming cocoons under bands. pupat- | winter- 
ing. ing. 
DLV S20 eae Dek Soc S ee eae ae Ee hay Se ee ee oe pee PPA gee aoe 15 1 
TU yi20=2 hte eee eee ne oe 26 0 
July 27-August 3 = ee! 27 1 
August S—10. S257 te occ eee 63 6 
TUT GuGy aS y Pee Re SS aN eee § eee es A eg See SS tee oe mee mOdno Hela sesee 16 6 
MUI OUISU =o 4 ee ee estes eee ee RET CEN Set eT Sh al ea eg 1 ae | ll 12 
INUBUSG ZARB Ae Sy eoe Sve bee cise os eae ee ene MOE CCE eee eee 1 5 
Aupust-3l=Septem beri 2 cs- cee ccare cet ce wee ose ee eee Reece eee a ee ange 0 11 
After September 1 all larvee appearing under bands were of the 
wintering brood. While some of the later second-brood larva may 
go over winter, there is evidence that most of them produce a second 
brood of moths instead. The species is therefore dependent largely 
upon the third-brood larve to perpetuate itself from season to 
season. 
Conditions affecting wintering larve in the orchard were not 
observed. Around the out door apple bin at a vinegar factory where 
large numbers of cocoons were examined in March and April the 
ereat majority of them contained live larve or pupe. 
REVIEW OF REARING WORK OF THE SEASON. 
An effort was made to rear through the season a continuous line 
of pedigreed stock from the earliest spring moths, with the principal 
object of ascertaining the maximum number of generations. With 
the exception of one unimportant break early in the season, this 
program was successfully carried out. 
The start was made from a number of eggs collected in the field 
and hatching May 4, several days before the hatching of the first 
egos laid in cages. The larve were reared in bagged fruit on trees, 
and developed into first-brood adults as shown in Table XXIV. 
