LIFE HISTORY AND HABITS: THE ADULT. 97 
gave a preference of fruit, as shown by feeding and egg punctures, 
in the following order: Apple, peach, plum, cherry, and pear. 
Further data are given in Table XLIX. 
TaBLE XLIX.—Attractiveness of different fruits to the plum curculio. 
Lot I. Lot IT. Lot III. Lot IV. 
| 
Punctures. Punctures. Punctures. Punctures. 
Dates. i——_—_--— | Dates: aaa RUCK Si ae 
Apple. | Peach. Apple. | Peach. Apple. | Plum. Apple. Plum. 
| 
May 1.... 5 5 | May 13.. 10 10 | May 20.- 5 5 | May 28.. 5 5 
Does 9 11 14.. 10 11 pales 9 11 29... 10 | 10 
Dees 13 Ga 15.. 8 12 22... 12 8 30. . 10 | 10 
aeeee 13 7 | 16:2 iit 9 23... 12 8 3l..| 5 15 
a 14 6 yaa 11 9 24.. 12 8 | June 1...| 8 12 
Gisce 13 7 18.. 11 7 25... 10 10 ya 13 | 7 
ifoace 17 3 19:5 10 10 2622 8 14 heal 11 | 9 
Sone ili) eee OED 7 3 7ee 5 5 
Total. 94 | 46 Total. 71 68 Total. 75 67 Total. 67 | 73 
| 
A total of 165 punctures is shown for apple, as against 114 on peach, 
and a total for apple of 142 against 140 on plum. 
The preference of the curculio for smooth fruit is shown by an 
experiment by Mr. Girault in 1906. In a jar were placed 20 beetles, 
8 males and 12 females, which were supplied on several successive 
days for four-hour periods, with 3 normal peaches and 3 peaches 
from which the fuzz, or pubescence, had been removed. The results 
are as follows: 
TaBLE L.—Showing preference of plum curculio for smooth versus fuzzy peaches, Myrtle, 
Ga., 1906. 
Normal, with pubescence. Pubescence removed. 
Fruit 7 
ie No. Egg Egg Feeding | Egg Egg | Feeding 
pune- {punctures punc- pune- (punctures) punc- 
tures. |witheggs.| tures. tures. (witheggs.| tures. 
Apr. loss eeeatpnl|saees cele 2 16 13 2 
2 1 1 2 15 9 4 
3 4 11 7 3 
Cy El eee ers See se: gene = Sore ame 1 1 5 
Belle ae 11 10 2 
6 |. 1 13 12 6 
WAG 1 11 10 9 
8 |. 2 13 11 7 
9 |. 1 8 8 oe 
10 3 4 3 5 
els 1 9 9 5 
12 3 4 | 4 3 
J 2 ee ee 3 2 | 20 116 | 97 56 
| | | 
A total of 3 egg and 20 feeding punctures is shown on the normal 
fuzzy fruit as compared with 116 egg punctures and 56 feeding 
punctures on fruit from which the hairs had been removed. 
17262°—Bull. 103—12——7 
