170 
HALF HOURS WITH INSECTS. [Packard. 
during July. Upon hatching, the young larvse bore in under 
the bark, and become fully grown in the autumn, spending 
the winter under the bark, probably both in the fig. 137. 
larva and pupa states, the beetles appearing during 
midsummer. 
The Scale Insect , Mytilaspis pomorum (Bouche) 
or Aspidiotus conchiformis of different authors, 
Fig. 137. — This, next to the borer, is by far the 
most prevalent and destructive enemy of the apple 
tree. The scale surrounds the body of the female, 
while the male is two-winged and flies about ac¬ 
tively. It closely resembles the Pine scale insect 
figured on page 39. The female lays her eggs 
(Fig. 138,1) in August under the scale protecting 
her body, and the young (2) hatch out in June, 
when they may be found running over the bark. 
By the middle or last of the month they become 
anchored by their long hair-like beak, and the Scale insect, 
day after, aS Riley states, a white waxy secretion 
begins to issue from the body, as seen in 3. During a 
period from the 6th to the middle of July, the larva loses 
Fig. 138. 
its legs and feelers and assumes the form of the adult female 
(5). Soon after the insect moults, and its cast skin remains 
10 
