BEETLES IN ORCHARDS. 121 
indicate a very early movement of the beetles for that locality, 
though no more were taken until May 9, more than three weeks later. 
Activity of the insects did not properly begin until May 21, after 
which date, with the exceptions shown, they proved to be fairly 
uniform in numbers up to July 2; after the latter date few were 
captured. A total of 381 individuals was taken during the period, 
an average of 5 and a small fraction per tree. 
Taste LXIX.—VJarring record of the plum curculio on peach, North East, Pa., 1910. 
Number ne ae Number r A s 
Dates ofjarring. | of beetles bs ae endl || Dates of jarring. of beetles W oe Z poaee 
caught. a caught. ions. 
PDE LOL Sek os ois =e 3 | Cloudy. Une: 20 Sees ees 23 | Clear. 
7 Bee See Sere ae Do. 7 POD ER eT 26 Do. 
27 te a A Seo ee aa Fair. VAT Ae sane toes 21 Do. 
2 Racin Se eee ee Cloudy. Dis cece 19 | Cloudy. 
DE eras sfeice.s = Seem Fair. DOME ere tene oe 18 | Clear. 
CL UDG D2 SR Seni Pine Foggy. Stalls 82 eee ccene- 12 Do. 
ole SARC OBSA ocean Gee Clear. Biyeetaataia/aeoe| Shorea as as Do. 
Gee ccte ce 2ntls sstlasce ed Do. Ube acecneetoe 3 | Cloudy. 
Lh Raat ea 7 | Cloudy. (ier 8, Sot hey ool a ee Clear. 
Dee nema: inst =| om- cote o Do. 1 eee 1 Partly cloudy. 
UB crete te re eit 1 | Clear. 1B eee easee [eee er eek Do. 
AG) ES oe Se) ee ae Do. 1G Bet octane leaeweeeece | Clear. 
IOe Saas vossee- 5 Do. 1h Ses ae SSeGperteet Do. 
DIRE RS 19 | Partly cloudy. up| Se a SS Sell ep ee | Partly cloudy. 
7 ie AS See 22 Do. PA ek ere oe Vanes ee na Do. 
2.) eee 22 | Clear. DD eine aoe Sede e eae Clear. 
Ue as eee Ae 1 Do. PATER Ee ey ect ces ees Do. 
Sime eee ara ae 19 | Cloudy. Gin NS Ee Ae oe Rae eee Partly cloudy. 
iy OR eee 4 ih eee eee es 2 | Clear. 
BE ee Sees sis cise 13 | Fair. LG eee Ae ee 25 Do. 
a ee ae 6 | Partly cloudy. QR TENS So ae: 2) Foggy. 
Be Rassias siete 4 | Clear. Pa Tete 1 | Partly cloudy. 
1 ge are ae ae 31 | Partly cloudy. BORE eee ce aacee 1 Do. 
{Be See 13 Do. SYS) 05307 es rs ee | CN ee Do. 
bee toes crass 19 | Clear. — 
Ue eee 37 | Partly cloudy. Motale-s.. a. 381 
ihe oesebaccaae 19 | Clear. | 
| 
In the jarring records obtained during 1910, at Douglas, Mich., a 
block of 70 peach trees was used, and the number taken on each row 
at each jarring was separately recorded. Row No. 1 was adjacent 
and parallel to a piece of woodland, the influence of which is evident 
by the larger number of insects taken early in the season from the 
first two or three rows. After about June 9 the beetles were uni- 
formly disseminated over the whole block. From May 4 to 10, a 
total of 5 beetles was secured and from May 13 to 19, a total of 20. 
From the last date they put in an appearance rapidly, showing for 
the period from May 24 to 28 a total of 240. The beetles were in 
maximum abundance during June, which month yielded 1,468, or 
59 per cent of the total for the season. The insects, nevertheless, 
were quite generally present all through July and August. None 
was taken after August 31, though jarrings continued until Septem- 
ber 19. (See Table LXX.) 
