100 DECIDUOUS FRUIT INSECTS AND INSECTICIDES. 
TIME OF EMERGENCE OF MOTHS OF THE SPRING BROOD. 
The first moth observed in 1907 appeared in the cages June 17 and 
the last July 10. The emergence period, as shown in figure 23, lasted 
twenty-three days, reaching a maximum on June 24. These emer- 
gence records are given in Table XXXV. 
TABLE XXXV.—LEmergence of spring moths during 1907, from material collected in a 
cider bin. 
| | 
Number : Number Number | Number 
| Date. of moths. Date. of moths. Date. of moths. | Date. | of moths. 
June 17 1 June 23 14 June 28 10 July 5 | 4 
| June 18 4 June 24 27 June 29 6 July 6 4 
June 20 2 June 25 14 July 1 1 July 10 2 
June 21 3 June 26 15 July 2 6n = 
June 22 6 June 27 3 July 3 2 124 
In the spring of 1908 moths commenced to appear in the cages by .- 
May 30. The last moth of this brood emerged June 24. Unfortu- 
nately no record as to the number of emerging moths was kept, and 
their relative abundance can thus only be estimated. Judging by the 
size of a number of larve collected in an orchard June 10, it was evi- 
dent that moths in the field must have appeared even earlier than 
those emerging in the cages and, on considering the band records also, 
it is probable that the emergence extended to the end of June. 
TIME OF EMERGENCE OF MOTHS OF THE FIRST BROOD. 
In 1907 the first moth emerged August 6, the maximum number 
emerged August 13, while the last moth appeared September 5; the 
emergence period was thus limited to thirty days. (See Table XXXVI 
and fig. 24.) 
TaBLE XXXVI.—Emergence of first-brood moths during 1907. From band-collected 
material of 1907 and reared specimens. 
Number Number | Number Number 
Date of moths. Date. of moths. Date. of moths. Date. of moths. 
Aug. 6 1 Aug. 15 1 Aug. 21 5 Aug. 27 2 
Aug. 8 2 Aug. 16 5 Aug. 22 4 Aug. 30 2 
Aug. 9 1 Aug. 17 5 Aug. 23 2 Aug. 31 1 
Aug. 10 5 Aug. 18 4 Aug. 24 4 Sept. 5 1 
Aug. 12 5 Aug. 19 2 || Aug. 25 4 
Aug. 13 18 Aug. 20 5 || Aug. 26 al 80 
During 1908 the emergence period was remarkably extended. In 
the cages the first moth emerged July 28, and the last moth emerged 
September 9, covering a period of forty-four days. In Table XXXVII 
are given the dates of emergence of the first-brood moths from band- 
collected material. (See also fig. 25.) 
