29 MISC. PUBLICATION 318, U. S. DEPT. OF AGRICULTURE 
Click beetles.—Click beetles are familiar to almost any person who 
has had anything to do with insects. This little elongated beetle 
has a body apparently divided into two parts only, 
the head being rather indistinct. When the insect 
is placed on its backit has the ability to flip itself 
into the air, and, after several attempts, alight 
on its feet. Click beetles vary considerably in size, 
from 14 of an inch to 2 inches. The larvae are 
called wireworms. ‘They feed on the roots and in 
the stems of various plants. Some of these insects 
complete their life cycle in 1 year, but other 
kinds may require several years. The scientific name 
? of the insect pictured here is Afelanotus communis, 
Figure 51.—Click order Coleoptera. DDT or ethylene dibromide used in 
ome the soil controls wireworms. 
Locust borer.—Among the beetles are some with very long anten- 
nae. ‘These are called longhorn beetles. Most members of this group 
have elongated bodies ranging in length from 14 
inch to 2 inches. The adults are rather strong 
fliers and swift runners. The larvae are borers 
and live within the woody parts of trees and 
shrubs or beneath tree bark. ‘The species shown 
here is the locust borer, Cyllene robiniae, a black 
beetle with yellow markings. It is about five- 
elghths of an inch long. The adults may be found 
basking in the sun on locust trees during Septem- 
ber. They feed on the flowers of goldenrod, and 
the larvae live inside locust trees. ‘These beetles 
have complete life canes ae overwinter in the 
larval stage in the inner bark, where they have 
been fending? They bore deep into the nad dur-. 7 "heer 
ing the following spring and summer and cause 
serious damage to locust trees, especially those of low vigor. This in- 
sect belongs to the order Coleoptera. DDT emulsion prevents attack. 
Flatheaded borer.—There is another group of insects that are 
fairly robust. They: have a rather uniform width of body except for 
the hind third, which tapers somewhat abruptly. 
Most of these dark-bronze-, brassy-, or coppery- 
colored beetles are commonly called buprestids. 
Like all the other Coleoptera, they have chewing 
mouth parts in both the adult and larval stage. 
The larvae are wood-boring insects and feed on 
many kinds of trees. They are decidedly seg- 
mented, and their broad, flat heads are about 
twice as wide as the rest of the body. ‘There is 
usually only one brood each season. Insects of 
be ~~ this type have difficulty in establishing them- 
Figure 53.Flat selves in healthy or vigorous growing trees, but 
borer. following drought or weakening of the trees from 
other causes these borers do become established, 
and control measures are necessary. Clean up and burn all infested 
trees and branches during April and May. Younger trees may be 
protected by wrapping with burlap or building paper. The insect 
SESS, 
