66 THE PLUM CURCULIO. 
TasBLeE XXV.—Length of time spent in fruit by plum curculio, Illinois, 1904. 
Total num- 
Average 
ber of Percentage = A 
Months. larvee of whole. yer, 
emerging. e 
Daus 
MUNG eee oe owe 5 See ae es pa 2 Ss ome ace eee eee ee 254 20. 52 18. 07 
Ut Seas abo aeeSoopeen se oeeer soaaceneeseecomor See Cadet csetnccnste 662 53. 47 19.15 
INGOTS ieee oee seen ness saab aes cdo eowouecadbas ecansoscseeacascss 272 21.97 21.55 
Swot) oN BBS ceencn acho s secon ane opoarsSs Somseescoascosescgec $55: 50 4. 04 26. 00 
Motel: ce. cats dcx See a Sosa eee ee ee ee eee 1, 238 100.00 | 
The average time for egg and larva in the fruit for the whole season 
was about 20 days. 
In Table XXVI are given records of a few observations from 
Youngstown, N. Y. (1905), and North East, Pa. (1906). 
TaBLE XXVI.—Length of time spent in fruit by the plum curculio (egg and larval stages 
combined), Youngstown, N. Y., 1905, and North East, Pa., 1906. 
Larve emerged Ap- |Total| Total Aver- 
proxi- | num-} num- 
mate | ber of| ber of 
time |larvee | eggand 
in |devel-) larval 
fruit. | oped.| days. 
Eggs 
Localities. depos- | Date of depo- 
ited. sition. Num- Dat 
ber. ale: 
Daus. 
July 10,1905 | 16.00 
July 12,1905 Hl 17 | 303.25 | 17.83 
Younestown;iNav.ss-s5-=-22= 43 | June 24,1905 | July 13,1905 | 19.00 
July 3.1906 aan 7 | 169.50 | 24. 21 
July 51906 | 20.75} 6 | 124.50 | 20.75 
July 3.1996 | 18.00] 4] 72.00 | 18.00 
June 14,1906 
June 15,1906 
He Db Oro Co eH OO 
oy 
S 
ae 
“<{ 
© 
= 
ie) 
=) 
(<P) 
mw) 
o 
on 
Oo 
re 12, 1906 { 
Totals. x weve deen cts |e ese o Meee ge Se ew | Se eee este eet ae 34 | 669.25 |-..... 
Average time spent in fruit during June for both localities. .............-..-....----------- days.. 19.68 
During 1905, at the insectary in Washington, data were obtained 
on the length of time spent in the egg and larval stages in the fruit 
for miscellaneous lots during May and June. As in the case of egg- 
hatching records, these were obtained under the same conditions in 
the insectary, where the temperature was higher than normal. These 
records are given in Table XX VII. 
