9 



and are crossed with lines of gray scales, giving them the appearance 

 of watered silk. At the tips of the wings there is a large brown spot, 

 in which are many scales of bronze or gold. The hind wings are 

 grayish brown in color. Taken as a whole, the coloring of the moth 

 is such that when resting on old grayish bark it is so like the bark 

 that it is not easily distinguished. The moth lays her eggs, a few 

 days after emergence, on the leaves of apple or other food plant, or 

 on the fruit. A maiorit}^ of the eggs of the first generation are laid 

 on the leaves, while the greater part of those of the second generation 

 are laid UDon the fruit. 



Fig. 1.— The codling moth: a, the moth or adult insect, slightly enlarged; b, the egg, greatly 

 enlarged; c, the full-grown larva, slightly enlarged; d, the pupa, slightly enlarged; e, the pupa in 

 its cocoon on the inner surface of a piece of bark, reduced about one-half; /, moth on bark and 

 empty pupa skin from which it emerged, about natural size (from Simpson). 



The egg. — The eggs are very minute, scarcely visible to the naked 

 eye, and pearly white in color, resembling thin convex disks. Around 

 the edge there is a coarse network of ridges; while toward the center 

 these ridges are finer, as illustrated in fig. 1 at 5. A red ring, 

 which indicates the erabrj^o or developing larva, appears in the egg 

 a few days after it is laid. In about eleven days, var^ang somewhat 

 with temperature, the young larva breaks its way out of the shell 

 and seeks to enter the fruit. 



The larva. — This is the most important stage of the insect, for not 

 only does it work its injury in the larval condition, but that is the 

 stage in which it is most amenable to remedial measures. 



A large number of the larva? which hatch from eggs deposited on 

 the leaves eat small portions of the leaves before finding fruit. The 

 2941— No. 247—06 2 



