The Wonders of Instinct: Chapters in the Psychology of InsectsFabre, Jean-Henri
Science
The Wonders of Instinct: Chapters in the Psychology of Insects
Fabre, Jean-Henri
Insects; Instinct
The Epeira acts in like fashion, with this advantage, that she is able
to renew her armful of fetters. Should the first not suffice, a second
instantly follows and another and yet another, until the reserves of
silk become exhausted.
When all movement ceases under the snowy winding-sheet, the Spider goes
up to her bound prisoner. She has a better weapon than the bestiarius'
trident: she has her poison-fangs. She gnaws at the Locust, without
undue persistence, and then withdraws, leaving the torpid patient to
pine away.
These lavished, far-flung ribbons threaten to exhaust the factory; it
would be much more economical to resort to the method of the spool;
but, to turn the machine, the Spider would have to go up to it and work
it with her leg. This is too risky; and hence the continuous spray of
silk, at a safe distance. When all is used up, there is more to come.
Still, the Epeira seems concerned at this excessive outlay. When
circumstances permit, she gladly returns to the mechanism of the
revolving spool. I saw her practice this abrupt change of tactics on a
big Beetle, with a smooth, plump body, which lent itself admirably to
the rotary process. After depriving the beast of all power of movement,
she went up to it and turned her corpulent victim as she would have
done with a medium-sized Moth.
But with the Praying Mantis, sticking out her long legs and her
spreading wings, rotation is no longer feasible. Then, until the quarry
is thoroughly subdued, the spray of bandages goes on continuously, even
to the point of drying up the silk glands. A capture of this kind is
ruinous. It is true that, except when I interfered, I have never seen
the Spider tackle that formidable provender.
Be it feeble or strong, the game is now neatly trussed, by one of the
two methods. The next move never varies. The bound insect is bitten,
without persistency and without any wound that shows. The Spider next
retires and allows the bite to act, which it soon does. She then
returns.
If the victim be small, a Clothes-moth, for instance, it is consumed on
the spot, at the place where it was captured. But, for a prize of some
importance, on which she hopes to feast for many an hour, sometimes for
many a day, the Spider needs a sequestered dining-room, where there is
naught to fear from the stickiness of the network. Before going to it,
she first makes her prey turn in the converse direction to that of the
original rotation. Her object is to free the nearest spokes, which
supplied pivots for the machinery. They are essential factors which it
behoves her to keep intact, if need be by sacrificing a few cross-bars.
Public-domain text, read in full here on John Shaqi.
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