Insects in the Garden 
299 
their eggs. When once the insects are established, no 
remedy is possible, as they get under the scales of the 
bulbs, and these act as an umbrella, and so protect them 
from anything that may be put on the garden. The 
ground, after an attack, may be treated with gas lime. 
This will kill the maggots or pupae. As a precaution, 
Onions should not be sown on the same ground for a 
year or two. 
Carrot Fly . — This is another very destructive creature. 
It is a small greenish-black insect and may be seen about 
the Carrot bed at 
almost any time of 
the season. It lays 
its eggs in or near 
the Carrot, and in a 
short time a little 
yellowish maggot is 
hatched. T his little 
maggot gradually 
eats its way into 
and down the Carrot 
until it comes to the 
tip of the root, through which it eats its way. By this time 
the tops of the Carrots have turned a yellowish green, and 
soon collapse. When the larvae have completed their 
growth they leave the Carrot and turn into pupae in the 
soil. During the summer this state of things only lasts for 
about three weeks, when a fresh batch of flies makes its 
appearance. In winter, however, the pupal stage lasts for 
a considerable time. 
The thinning of Carrots should be done carefully, in 
Carrot Fly 
1, Larva. 2, Magnified. 3 and 4, Larva appearing 
from the galleries excavated in the carrot. 5, Pupa. 
6, Magnified. 7 and 8, The fly (nat. size and enlarged). 
