LEPIDOPTERA 



691 



Fig. 869. — Apatela hama- 

 melis, larva. 



acteristic feature is a double row of milk-white spots along the middle 



of the back. 



The copper hindwing, Aniphtpyra pyramidoides. — The fore wings 



of this moth (Fig. 870) are dark brown, shaded with paler brown, and 



with dots and wavy lines of a glassy gray or dull whitish hue. The 



hind wings, except the costal third, are reddish with more or less of a 



coppery luster. This suggests the popular 



name. The larva feeds on the leaves of 



grape and of Virginia-creeper. 



The many-dotted apple-worm. Balsa 



maldna. In June, and again in August or 



September, there is sometimes found on 



apple-trees, in considerable numbers, a 



rather thick, cylindrical, light-green worm, 



an inch or more in length, with fine, white, 



longitudinal lines and numerous whitish 



dots. These are the larvae of the little moth 



represented by Figure 871. The fore wings 



of this moth are ash-gray, marked by ir- 

 regular, blackish lines. The larvae feed on 



the leaves of many other trees beside apple. 



The moth has been found throughout the 



eastern half of our country. 



The hop-plant borer, Gortyna immdnis. — This is a well-known pest 



in the hop-growing regions. The moths deposit their eggs on the tips 



of the hop-vines just as they begin to 

 climb. The young larva burrows into 

 the vine just below the tip and spends 

 the early part of its life in the vine at 

 this point, causing the injury called 

 by growers "mufflehead." Later the 

 larva burrows to the base of the vine, 

 where it feeds upon the stems. In this 

 stage it is known as the hop-grub. 

 The pupa stage is passed in the ground 

 near the infested roots. The moths 

 emerge in the autumn or in the follow- 

 ing spring. To check the ravages of this pest the muffleheads should 



be picked off and destroyed while the larvae are still in them. 



The divers, Bellura. — The genus Bellura contains three North 



American species, 5. melanopyga,B. diffusa, and B. gortynoides. The 



first two of these species were bred by the writer 



from the leaf-stalks of the yellow pond-lily, the 



habits of the third species are as yet undescribed. 



The larvae of the first two species are able to de- 

 scend into water and remain there for a long time ; 



for this reason the common name the divers is 



proposed for them. 



The black-tailed diver, Bellura melanopyga.- — ■ 



Only the female of this species has been described. In this sex the 



Fig. 870. — Amphipyra pyramidoi- 

 des. 



Fig. 871.- 

 ana. 



-Balsa mal- 



