The romance of insect life : $b Interesting descriptions of the strange and curious in the insect worldSelous, Edmund
Science
The romance of insect life : $b Interesting descriptions of the strange and curious in the insect world
Selous, Edmund
Insects
Other spiders—as doubtless the _Mygale_ if he can get them—will eat
lizards, as the following account by Mr. Frederick Pollock will show:
“Having procured from the Deserta Grande some fine specimens of this
large and handsome spider (_Lycosa_—a kind of tarantula) in the early
part of this year, and having provided suitable cages with glass lids
for them, I was anxious to ascertain how large an animal the largest
spider would take; and for this purpose I obtained some lizards about
three inches long, including the tail. Three of these lizards were
killed and devoured by one spider during the time I kept it. They were
eaten bones and head and claws and all, the only remnant of the feast
being a small ball about a quarter of an inch in diameter, which was
cast aside at the bottom of the cage.”[138] But why were not some larger
lizards tried, since there was no difficulty about three inches? Every
inch would have increased the fun—I mean have added to the scientific
interest. But perhaps there were none larger.
Mr. Pollock goes on to say that “the islands of Madeira, Porto Santo,
and Deserta Grande all lie within an area about fifty miles across. They
have each its own peculiar large _Lycosa_, no two being alike; and it is
a very remarkable fact that these _Lycosæ_ vary in size inversely with
the magnitude of the island on which they are found—Madeira, the largest
island, having the smallest _Lycosa_, and Deserta Grande, the smallest
island, having by far the largest spider. The mode of defence of all
these varieties of _Lycosæ_ is precisely the same. They elevate the
thorax, raise the first pair of legs high up, and opening wide asunder
their falces, strike at and seize any object, such as the end of a
pencil” (or the tail of a lizard) “in a most formidable manner.”[138]
There is another lizard-eating spider, or at least a spider that will
eat lizards when formally introduced to them, and that in a very
scientifically interesting manner, the lizard showing such a lively
sense of its situation, and the jaws of the spider working in a way
which is very curious. These jaws, it appears, are double, also
“cheliform,” “denticulate,” and several other things, from which I
gather that there are two pairs, each pair working something like the
claws of a crab, but with a sawing action, adapted to their toothed
surface. By an extremely beautiful adjustment, when the spider in
question seizes its prey, one pair of jaws holds on to it, whilst the
other saws into it, and then the pair which has been sawing, holds, and
the pair which has been holding, saws, and so on alternately, a
division, and yet, at the same time, a combination of labour.
“Like to a double cherry, seeming parted,
But yet an union in partition.”
Public-domain text, read in full here on John Shaqi.
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