Beetles 
2 77 
front, velvety green with the sides of thorax and head brownish yellow; the 
under side is not velvety, but metallic green. It flies with a loud buzzing 
sound and feeds on ripe fruit. The larvae are found in richly manured 
soil, feeding on decaying matter. They cannot use the short legs for crawling, 
but move along on their backs by means of stiff bristles. “If put on a table 
Fig. 381. Fig. 382. 
Fig. 381.—Larva and pupa of the rhinoceros-beetle; Dynastus tityrus. (After Chittenden; 
one-half natural size.) 
Fig. 382.— Euphoria inda. (One and one-half times natural size.) 
in normal position, they immediately turn upon their backs and by the 
alternate contractions and expansions of their body-segments they wriggle 
away in a straight line.” 
SECTION TETRAMERA. 
In the four families of beetles constituting this section the feet are appar¬ 
ently composed of four tarsal segments, one of the more usual five being 
so reduced in size and fused with the last segment as to be practically indis¬ 
tinguishable as a distinct segment (except in the Spondylidae). The first 
three tarsal segments are dilated and furnished with brushes of hairs on 
the sole, the third segment being plainly bilobed (Fig. 341, 12). This 
section is sometimes named Phytophaga, because of the voracious plant¬ 
feeding habits of all its members. The three principal families of the 
section can be separated by the following key: 
Body short and more or less oval; antennae short. 
Front of head not prolonged as a short broad beak; elytra usually covering the tip 
of the abdomen; both larvae and adults live on green plants. 
(Leaf-beetles.) Chrysomelid^:. 
Front of head prolonged as a short, quadrate beak; elytra rather short, so that the 
tip of the abdomen is always exposed; larvae live in seeds. 
(Pea- and bean-weevils.) Bruchid^:. 
Body elongate; antennae almost always long, often longer than the body; larvae are 
wood-borers...(Long-horn beetles.) Cerambycid^:. 
The leaf-beetles, Chrysomelidae, are one of the largest of the beetle fami¬ 
lies, over 600 North American species being known. They are mostly small, 
