The circular snare is the highest form of spinning work attained by
spiders, and there is little temptation to expend much time in studying
the cruder structures that meet the eye everywhere, but two other types
are worth a brief notice. Examine any garden bush—particularly a
holly bush, of which the rather rigid leaves provide excellent points
of support—and you will find numberless small webs made without any
discoverable method, the lines crossing one another at random in all
directions. These are the snares of some species of _Theridion_, and if
the webs lack interest the spiders themselves are worth looking at, for
they are nearly always quite prettily ornamented.
The other common type of snare is that of _Linyphia_. It is larger and
of more definite design, consisting of a finely-spun hammock stretched
horizontally, and surmounted by a labyrinth of irregular lines. Flies
entangled in the labyrinth fall upon the hammock in their struggles to
escape, and the spider is at hand—always on the under surface of the
hammock—to ensure their capture.
Having noted these three common types of snare, let us leave the garden
and choose a new field for our observations.
If it is an absolutely calm sunny October morning it will be a suitable
occasion for visiting an iron railing, the “knobbier” the better. Early
summer will do, but late autumn is generally more fruitful. Almost
any railing will serve, but the most satisfactory kind is one with
the uprights surmounted by round knobs, and not by spikes. We see at
once that the knobs, and the upper rail are glistening with silken
lines; many spiders have obviously been at work there. Lines streak
the top-rail in all directions, stretch from knob to rail, or from
knob to knob if not too distant, while here and there loose ends or
streamers flutter gently in the slight currents of air. And closer
inspection reveals various small objects moving among this labyrinth
of threads. Most of them are spiders, though insects, and particularly
weevils, are not wanting. No doubt the weevils know their own business,
though the writer has not been taken into their confidence, but the
spiders are the particular object of our investigation. And first of
all note that it is a veritable race-congress of spiders; the most
varied groups are represented. Wolf-spiders (Lycosidae) which under
ordinary circumstances rarely leave the ground are found in company
with crab-spiders (Thomisidae), jumping spiders (Attidae), as well as
Epeiridae and Theridiidae of which we already know something. They
have only one thing in common—they are either small species or small
and immature specimens of larger species. They seem to be scrambling
about in a meaningless sort of way, paying little or no attention to
each other—which is odd, for spiders are terrible cannibals, and as a
general thing it would be exceedingly unsafe for a small spider to rub
shoulders with a larger one of a different species.
Public-domain text, read in full here on John Shaqi.
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