114 THE PLUM CURCULIO. 
buds in 1904 were expending about May 3, trees were in full bloom 
May 10, and the blossoms had fallen by May 15. As compared with 
the condition of the trees, in 1904 the beetles were in evidence about 
two weeks earlier than in 1903. 
Some data have been obtained on this point by the Bureau of 
Entomology. In 1905 records were made by Mr. Johnson, at 
Youngstown, N. Y., (see Table LIX) and though jarrings were a little 
late, the results are of interest as showing the occurrence of insects 
with reference to the condition of the trees. 
TasLE LIX.—Time of appearance of plum curculio on trees in spring. Jarring records, 
Youngstown, N. Y., 1905. 
Japan plum. sere Peach. Pear. 
eae : 2 : Condition of trees. 
‘ur- ur- ur- Cur- 
Trees. culios. Trees. culios. Trees. culios. Trees. culios. 
50 1 25 2 755 Sepa seacemen) eae nok 
25 9 50 6 25 ya lesa Bee eee ene . 
25 BAN is Saeseclh on doscs 25 PH eae se ease Japan and Domestica 
plums in full bloom. 
GEC 25 1 25 4 25 1 PVE Aaa te 
Lee 50 39 50 23 25 1S rset yer ere | Peach in full bloom. 
ik eee 25 9 25 12 205i enlace ese eee ears Pears in full bloom. 
Deena 25 8 25 7 25 1 25 2 | Plum blossoms fallen. 
p) ae 25 6 25 2 PAS Penner 25 1 - 
2 sae 15 30 15 11 15 Alin te oee| a cleatoes 
BORN. 3 | 25 26 25 15 25 Psi Laeger oe Peach and pear blossoms 
| fallen. 
June: 1-!-_: 25 B24) ose Sanuliaemancee 25 Pale eee) oes ake 
7 ae RES eee ence tal ee rend lama ce eee | Ries Sn elles ska | First egg punctures seen 
| onapple and plum. 
Total |........ | 195"|20 cs 82 cee | istics aoe 3 | 
Also, similar data were secured by Mr. Johnson at North East, Pa.. 
in 1906, as shown in Table LX. 
TaBLeE LX.—Time of appearance of plum curculio on trees in spring. Jarring records, 
North East, Pa., 1906. 
: Domestica 
Sweet cherry. | Sour cherry. Apple. plum. 
a a a é Condition of trees. 
ur- - ur- ur- 
Trees. | cutios. | TT€€S: | culios. | TTS: | eulios. | TT*S- | culios 
prs s0 sees |e Joel ees soeleeecas es aceaace ig eee Seee ee ec Cbd PESSaree Cluster buds of apple 
just opening. 
May 62.22. 50: eh ectect 50 8) Sn scitnss | Soceee oe] eecacees | seemenee 
eee Di) eeeaiete| Satara tereisestecate 25 | Beaceskes Hesasas: 
Re 4 Rear! Cae see Pacem bnemcse 50 Wo osm ab cee | teemenios Sweet cherry and plum 
trees in full bloom. 
14s 25) |Soceeae aooeeemaloee cee e 50 (hl BAgene or oocusnce 
LGseene 7A Se cinta Naoe ane 50 25 25 1 
Sse QB S= occieterele 25 1 fl esse e eamnes eseereee| Gecuan sc Sour cherry in full 
bloom. 
BOE e Er 25 1 25 7 25 25) Pace eeiesposieninerte 
DR Bees se) Cee 25 7 | awesnictcrel| ce selene Eocene | eee First egg punctures on 
plums, pears, apples, 
and cherries seen May 
24. 
Total'|.....-- ie Boi |Baese rr Neate ee 1 
