REPORT OF STATE ENTOMOLOGIST, 1898 233 



Record of eggs deposited by two elm-leaf beetles « 



FEMALE L\ VIAL FEMALE IN TUMBLER 



DATE CLUSTEKS OF TOTAL 



June I (2) 29 



June 2 



June 3 9, 9. 14 32 



June 4 



June s 



June 6 18 18 



June 7 



June 8 15 15 



June 8 (2 p. m.) 20 20 



June 9 



June 10 20 20 (3p, m.).., 



June II 23 23 



June/-? 



June 13 II, 13 24 



June 14 31 31 



June 15 16,5 21 



June 16 28 28 



June 17 



June 18 (absent) 



June 79 26,30 56 



June 20 2,6 8 



June 21 3.18 21 



June 22 2,20 22 



June 23 27 27 



June 24 



June 25 



June 26 



June 27.. 5, 7, 9, 15 36 



June 28 (dead) 



CLUSTERS OF TOTAL 

 (4) 42 



18 



18 





26, 21 



47 



4, 26 



30 



27 



3, 31 



27 

 34 





3, 7, 8, II, 15, 19 



63 



14, 27 

 30 

 32 



41 

 30 

 32 



10,26 



. ^^ 

 6,25 



4.31 

 h 2, II, 7,13 



36 

 31 



35 

 34 







i3» 21, 32 

 (dead) 4, 17 



66 

 21 



431 623 



It will be seen tliat from June i to 11 there were usually deposited 

 between 15 and 47 eggs every other day. The 12th being Sunday, I 

 did not attend to the beetles, but from there being two or more clusters 

 found with each on Monday, it is probable that one or more were depos- 

 ited the preceding day. The record shows that from either the 12th 

 or 13th there was a marked increase in the number of eggs laid till 

 the 23d, there being, as a rule, from 8 to over 40 deposited daily. In 

 the case of the one confined in the vial, the record shows a discrepancy, 

 which is greater than the facts warrant. I was unable to attend to the 

 insects on the i8th, consequently it appears as though two days during 

 this period had been skipped by one beetle and one by the other, 

 whereas it is probable that but a day passed without the beetle in the 

 vial depositing eggs and that the other really presents an unbroken record 

 in this respect. During this short period of 10 or 11 days there were 

 deposited over half of the total number of eggs produced during the 28 



a The examinations were made as a rule, between 8.30 and g a. m., though occasionally, when 

 eg-gs were seen in the afternoon, they were recorded at the time indicated in the table. The 

 dates falling on Sunday are in italics and as a rule no observations were made then. 



