152 PESTS OF GARDEN AND FIELD CROPS 
The Twelve-spotted Cucumber Beetle ( Diabrotica 
duodecimpunctata Oliv.) 
This insect, in its larval stage, is known in the South as the southern 
corn root-worm, where it is a pest of corn and other field crops. 
In the central and northern re- 
gions injury by the adult beetle is 
more often noted, the crops at- 
tacked being cucumber, melon, 
squash, beets, cabbage — in fact, 
almost every sort of vegetable. 
The beetles are especially partial 
to the blossoming parts of the 
plant. 
The adult is easily recognized. 
It is one fourth of an inch long, 
broader toward the hind end, yel- 
Fic. 154.— The Twelvespotted Cu-  lowish green 
cumber Beetle. Enlarged and natu- 
ral size. Original. 
in color, and 
ornamented f : 
with twelve black spots on its back. Its head 3 
is black. NE 
The adults hide away during the winter, and Ba 
iS 
appear early in the spring. There are two 
generations in the North, and probably more \f 
in the South. 
Remedies for the adult beetle are the same 
as those for the striped cucumber beetle. 
! 
Tbe Asparagus Beetle (Crioceris asparagi Linn.) : 
Both the young shoots and the leafy tops of 
asparagus are attacked by the larva and the 
adult beetle of this species. The shoots are Fic. 155.— Eggs of the 
< bw Gs Asparagus Beetle. 
rendered unfit for use, and the injury to the — Eplarecd and natural 
tops weakens the plants. size. Original. 
