44 
JOURNAL OF ECONOMIC ENTOMOLOGY 
[Vol. 17 
Table II. Summary of Oviposition of the Angoumois Grain Moth ( Sitotroga 
cerealella Oliv.), Showing Effect of Providing Drinking Water 
(Silver Spring, Md.—1923) 
Emerged 
and Mated 
Total 
Eggs 
Remark s 
Aug. 26 
196 
no water 
26 
196 
i i it 
26 
159 
it ti 
26 
157 
It it 
26 
201 
it it 
26 
122 
given water 
26 
132 
it it 
26 
123 
it it 
26 
107 
it ft 
26 
131 
it it 
Sept. 21 
0 
no water 
21 
133 
It 11 
21 
22 
it it 
21 
30 
a a 
19 
170 
given water 
19 
134 
ti a 
19 
139 
it it 
19 
144 
it it 
Oct. 2 
0 
no water 
2 
0 
it It 
2 
71 
ti it 
2 
77 
it It 
2 
0 
it it 
2 
263 
given water 
2 
169 
it it 
2 
44 
it it 
Nov. 14 
19 
■ no water 
14 
2 
it it 
14 
0 
ti ti 
14 
0 
it it 
14 
281 
given water 
14 
113 
ti ii 
14 
164 
ti it 
14 
142 
it it 
considerable period, not infrequently as long as 2 or 3 hours. Copula¬ 
tion occurs more than once. In hot weather the preoviposition period 
is less than 24 hours. The incubation period is as short as 4 days. 
During August and September the incubation periods of 13,000 eggs 
varied from 4 to 10 days in length. The duration of the period from 
hatching to emergence was as short as 28 days, in new-crop wheat. 
