The Cambridge natural history, Vol. 06 (of 10)Sharp, David
Science
The Cambridge natural history, Vol. 06 (of 10)
Sharp, David
Animals
When this is attained, the owner commences to excavate a chamber for the
reception of the ball; sometimes the false friend takes advantage of the
opportunity thus offered and carries off the ball for her own use. Should
no disappointment of this sort occur, the _Scarabaeus_ accomplishes the
burying of the ball in its subterranean chamber, and accompanies it for the
purpose of devouring it; the feast is continued without intermission till
the food is entirely {197}exhausted, when the _Scarabaeus_ seeks a fresh
store of provender to be treated in a similar manner. According to M.
Fabre's account these events occur in the spring of the year, and when the
hot weather sets in the _Scarabaeus_ passes through a period of quiescence,
emerging again in the autumn to recommence its labours, which are now,
however, directed immediately to the continuance of the species; a larger
subterranean chamber is formed, and to this retreat the beetle carries dung
till it has accumulated a mass of the size of a moderate apple; this
material is carefully arranged, previous to the laying of the egg, in such
a manner that the grub to be hatched from the egg shall find the softest
and most nutritive portions close to it, while the coarser and more
innutritious parts are arranged so as to be reached by the grub only after
it has acquired some strength; lastly, a still more delicate and nutritive
paste is prepared by the mother beetle for a first meal for the
newly-hatched grub, by some of the food being submitted to a partial
digestion in her organs; finally, the egg is deposited in the selected
spot, and the chamber closed. Certain of the Coprides exhibit, according to
Fabre, some extremely exceptional features in their life-histories. The
mother, instead of dying after oviposition, survives, and sees the growth
of her young to the perfect state, and then produces another generation. No
similar case can be pointed out in Insects, except in the Social kinds; but
from these the Coprides observed by Fabre differ profoundly, inasmuch as
the number of eggs produced by the mother is extremely small; _Copris
hispanus_, for instance, producing in each of its acts of oviposition only
one, two, or three eggs.
[Illustration: Fig. 89—_Scarabaeus sacer._ Portugal.]
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