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Part VII] Beeson: Life History of Toon Borer . 
Pairing and oviposition. During the life-history studies from 1913 
to 1917, numerous attempts were made to pair the moths in rearing 
cages and obtain eggs. All obvious conditions were tried, e.g., cages 
of wire, muslin, glass, and pottery with few and with numerous ind i- 
duals, in light, shade and darkness, with flowers, fruits and shoots, and 
finally with a growing toon tree in a large outdoor cage. Only in the 
latter case was success obtained. Moths lived in captivity up to ten 
days. 
Number of eggs laid . To obtain an indication of the number of 
eggs laid, a dozen females were dissected and the ova counted. The 
maximum per individual was 621 and the minimum 228. The average 
is 472. 
Incubatio7i period . In the field eggs were found laid on flowers, 
on young fruits, and on developing leaves and leaf buds. The eggs 
are laid singly, firmly attached by a fluid secretion from the cement 
gland of the female moth. The eggs hatch in 4 to 5 days. 
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