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1 Order, Coleoptera, (Beetles). Many beetles are colored so as
2 to resemble the surfaces which they habitually frequent, and they thus
3 escape detection by their enemies. Other species, for instance, diamond-beetles, are ornamented
4 with splendid colors, which are often arranged in stripes, spots, crosses,
5 and other elegant patterns. Such colors can hardly serve directly as a protection, except in the case
6 of certain flower-feeding species; but they may serve as a warning or means of
7 recognition, on the same principle as the
8 phosphorescence of the glow-worm.
9 As with beetles the colors of the two sexes are generally alike, we have
10 no evidence that they have been gained through sexual selection; but this is
11 at least possible, for they may have been developed in one sex and then
12 transferred to the other; and this view is even in some degree probable
13 in those groups which possess other well-marked secondary
14 sexual characters. Blind beetles, which cannot, of course, behold each
15 other's beauty, never, as I hear from Mr. Waterhouse, Jr., exhibit bright
16 colors, though they often have polished coats; but the explanation of their
17 obscurity may be that they generally inhabit caves and other obscure stations.
alike : 9
and : 2, 5, 11, 12, 17
are : 1, 3, 4, 9
arranged : 4
beauty : 15
been : 10, 11
beetles : 1, 3, 9, 14
behold : 14
blind : 14
bright : 15
but : 6, 10, 16
can : 5
cannot : 14
case : 5
caves : 17
certain : 6
characters : 14
coats : 16
coleoptera : 1
colored : 1
colors : 4, 5, 9, 16
course : 14
crosses : 4
degree : 12
detection : 3
developed : 11
diamond : 3
directly : 5
each : 14
elegant : 5
enemies : 3
escape : 3
even : 12
evidence : 10
except : 5
exhibit : 15
explanation : 16
feeding : 6
flower : 6
for : 3, 11
frequent : 2
from : 15
gained : 10
generally : 9, 17
glow : 8
groups : 13
habitually : 2
hardly : 5
have : 9, 10, 11, 16
hear : 15
inhabit : 17
instance : 3
least : 11
many : 1
marked : 13
may : 6, 11, 17
means : 6
never : 15
obscure : 17
obscurity : 17
often : 4, 16
one : 11
order : 1
ornamented : 3
other : 3, 5, 12, 13, 17
other's : 15
patterns : 5
phosphorescence : 8
polished : 16
possess : 13
possible : 11
principle : 7
probable : 12
protection : 5
recognition : 7
resemble : 2
same : 7
secondary : 13
selection : 10
serve : 5, 6
sex : 11
sexes : 9
sexual : 10, 14
some : 12
species : 3, 6
splendid : 4
spots : 4
stations : 17
stripes : 4
such : 5
surfaces : 2
that : 10, 17
the : 2, 5, 7, 8, 9, 12, 16
their : 3, 16
then : 11
they : 2, 6, 10, 11, 16, 17
this : 10, 12
those : 13
though : 16
through : 10
thus : 2
transferred : 12
two : 9
view : 12
warning : 6
waterhouse : 15
well : 13
which : 2, 4, 13, 14
with : 4, 9
worm : 8
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