When Any Large
Insect, As A Grasshopper Or Wasp, Is Caught, The Spider, By
A Dexterous Movement, Makes It Revolve
Very rapidly, and at
the same time emitting a band of threads from its spinners,
soon envelops its prey in
A case like the cocoon of a silkworm.
The spider now examines the powerless victim, and
gives the fatal bite on the hinder part of its thorax; then
retreating, patiently waits till the poison has taken effect.
The virulence of this poison may be judged of from the fact
that in half a minute I opened the mesh, and found a large
wasp quite lifeless. This Epeira always stands with its head
downwards near the centre of the web. When disturbed, it
acts differently according to circumstances: if there is a
thicket below, it suddenly falls down; and I have distinctly
seen the thread from the spinners lengthened by the animal
while yet stationary, as preparatory to its fall. If the ground
is clear beneath, the Epeira seldom falls, but moves quickly
through a central passage from one to the other side. When
still further disturbed, it practises a most curious manoeuvre:
standing in the middle, it violently jerks the web, which it
attached to elastic twigs, till at last the whole acquires such
a rapid vibratory movement, that even the outline of the
spider's body becomes indistinct.
It is well known that most of the British spiders, when
a large insect is caught in their webs, endeavour to cut the
lines and liberate their prey, to save their nets from being
entirely spoiled.
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