1 PESTS OF GARDEN AND FIELD CROPS 
to pupate. There are two to 
four generations annually. 
\ To control, permit a few 
shoots to grow up at once, 
and poison with Paris green the 
beetles and grubs on these. 
Collect the shoots desired for 
the table or market at frequent 
r intervals. Fresh, air-slaked 
Fie. 157. 
Beetle. t ] 
Original. kill them. 
The Twelve-spotted Asparagus Beetle (Criocerts duodecimpunctata L.) 
Injury by this species to the young shoots is much t as 
that due to the common asparagus beetle. Holes are dug and the 
surface is eaten both by the grubs and by the adult beetles 
Later, when the tops are 
grown, the adults tend to 
feed largely on the substance 
of the berries. 
The adult beetle is one 
fourth inch long, orange in 
color, with six black dots on 
each wing cover. The grub 
is three tenths of an inch 
brownish head. There are Fic. 158.—The ted Aspara- 
gus Beetle. and natural size. 
from two to four generations Original 
annually. 
Tortoise Beetles attacking Sweet Potatoes 
As soon as sweet potato plants are set out in the field they are sought 
out by odd little insects known as tortoise beetles. Holes are eaten 
