LIFE HISTORY AND HABITS: THE ADULT. 107 
Taste LV.—Comparison of number of feeding and egg punctures of the plum curculio 
from various localities. 
Siloam Springs, Ark., 1908. Washington, D. C., 1905. 
Pair No. ae Egg — Egg 
punc- Length of life. punc- Length of life. 
punc- | tures punc- | tures 
tures tures. f 
May 13 to Sept. 15....... 273 289 | May 11 to July 3-6. 
May 13 to July 28 : 311 616 | May 11 to Aug. 28. 
May 13 to May 165 131 | May 11 to June 18. 
May 13 to June 2 : 280 350 | May 11 to July 7. 
My USO RI LUGE S ayers eters orJora es elal| mcnietete lero 
May 13 to Sept. 9-. 
May 13 to July 31.. 
May 13 to May 24. . =|(ERe 
Marya S COPANO 20 eon a eee er ere 
Mayil3 Cov vuliy Winsor foe| eens lascm ans 
_ 
SOONG whe 
3 ee Auaktan sles” oe 
Myrtle, Ga., 1906. 
=" Male 
Pair No. Feeding Egg died— 
punc- punc- Length of life. 
tures. tures. 
1 oe SS BSC C SE SE SAC OCe Se See Se ee re 160 138 | Apr. 6 to July 30........ May 18 
Re Rm tae ae en is Sa Solan are wale ato 110 29)|| Apr. 6'to June's. -..-. =. - July 29 
Sec a nerlah StS 5 Se ne en ee 217 191 | Apr. 6 to July 26.......-. July 24 
Ne Peet Pee SRSA oti te Sao sabioee 147 (9 PAspr: Git) ssoecee se sseee July 20 
See cee ete ee aan ice eens pace cs eseu 152 1187) Atpr, Gitoraugs Ol 235 - July 18 
Gia eee canoe occa cee tcc eeaneelseoeeetse = 146 44 | Apr. 6 to June 26.......- June 2 
Memes soe ee eects eae aa 2 Sails aces obese a= ote 150 82 | Apr. 6 to June 18.......- June 18 
te ee a Se ae oni aa Serie ae arh Sate cein Deets 6 Ae 211 133 | Apr. 6 to Aug. 10..-.-.-- Aug. 20 
Motale Ss 9.25 cso cs oaks oo seceseeeseue ees 1, 293 814 
It will be noted that in two instances feeding punctures consid- 
erably outnumbered the egg punctures. For Arkansas the ratio 
is about 9 to 1, and for Georgia about 14 to 1, indicating considerably. 
less feeding on peaches in proportion to egg laying than in the case of 
apples. The Washington records show a larger number of egg than 
feeding punctures, but these specimens were kept under temperature 
conditions abnormally high, which probably stimulated oviposition, 
as elsewhere stated. 
ACTIVITY OF THE BEETLES IN EGG LAYING AND FEEDING, BY DAY 
AND BY NIGHT. 
Information on the relative activity during day and night of the 
beetles in oviposition and in feeding is meager. Riley! states that 
the curculio is nocturnal rather than diurnal, as regards the period of 
flight, and affirms that it is far more active at night than during the 
day. He further adds that, with the exception of such females as are 
engaged in egg laying, most of the curculios rest during the day, 
sheltered by the foliage or branches of the tree or convenient trash or 
the ground. 
1 Third Missouri Report, p. 14. 
