CO LEO P TER A. 
5 67 
species. These live under the bark of pine-trees. They 
are closely allied to the Cerambycidae, but differ in the form 
of the tarsi and in the structure of the antennae. The 
fourth segment of the tarsus, although much reduced in 
size, is distinctly visible; the first three segments are but 
slightly dilated, and the third is either bilobed or not (Fig. 
686). The segments of the antennae have deep impressions, 
in which are situated the organs of special sense (Fig. 687). 
The most common species is Para 7 idra bruttnea (Pa-ran'dra 
brun'ne-a) (Fig. 688); this insect is of a mahogany-brown 
color. 
Family CERAMBYCID/E (Cer-am-byc'i-dae). 
The Long-horned Beetles or Cerambycids ( Ce-ram'by-cids ). 
This is a very large family, there being about six hun¬ 
dred described species in North America alone. As a rule 
the beetles are of medium or large size, and graceful in 
form ; many species are beautiful in color. The 
body is oblong, often cylindrical. The antennae are 
long, often longer than the whole body; but except 
in one genus, Prionus , they are only eleven-jointed, 
as with most beetles. The legs are also long, and 
the tarsi are apparently four-jointed, the fourth 
segment being very small and hidden; the third 
segment of the tarsi is strongly bilobed (Fig. 689). 
They are strong fliers and swift runners; but many of 
them have the habit of remaining motionless on the limbs 
of trees for long intervals, and when in this apparent trance 
they suffer themselves to be picked up. But, when 
once caught, many species make an indignant squeak¬ 
ing by rubbing the prothorax and mesothorax to¬ 
gether. 
The larvae are borers, living within the solid 
parts of trees or shrubs, or beneath bark. They are 
white or yellowish grubs. The body is soft, and 
fig. 690. ta pers slightly from head to tail (Fig. 690); the 
jaws are powerful, enabling these insects to bore into the 
