Everyday Objects; Or, Picturesque Aspects of Natural History.Adams, W. H. Davenport (William Henry Davenport)
History
Everyday Objects; Or, Picturesque Aspects of Natural History.
Adams, W. H. Davenport (William Henry Davenport)
Natural history
The mole-cricket is, like the grasshopper, a child of summer. It
differs, moreover, from the "cricket on the hearth" in lacking those
organs of _stridulation_ (excuse the word, kind reader!) which
mark "the glad silent moments" with their tricksome (and sometimes
inconvenient) tune. Their posterior thighs have an apparent bulging
about them, but the legs are very short; so short, that our little
friend could not compete with its cousin, the grasshopper, in
vaulting exercises, even were it not otherwise prevented by its large
abdomen. Nor is it much assisted by its wings, for though they are
broad, they are not organised for rapid flight, and the mole-cricket
makes but little use of them. Nature, however, has compensated it
for all these disadvantages by the gift of those strong, powerful,
flexible fore-feet of which I have already spoken.
The species generally met with in gardens, corn-fields, and orchards
is the _Gryllotalpa vulgaris_ of Latreille, identical with the
_Gryllus gryllotalpa_ of Linnæus. It has a brown head, garnished with
rusty-coloured mandibles; the thorax is of a brownish-gray, velvety,
tinged with red in the fore parts; the elytra, or wing-sheaths, which
are much shorter than the abdomen, are gray, and marked by black and
conspicuously prominent nerves; the wings, folded back like a fan,
are about one-fourth longer than the abdomen.
* * * * *
The mole-cricket,--mark me!--is no more of a root-eater than the
mole; it is carnivorous, like the Staphylinus. As an experiment in
confirmation of this statement, we shut up one of these curious
Orthopteras in a large chest filled with mould. Concealed in the
galleries which it speedily constructed for its use, it fed upon
larvæ, and never touched the cereals which we had sown in the earth.
Here was a proof that we had to plead the cause of another of man's
victims.
The mole-cricket ejects, when pursued or tormented, a blackish
liquid, whose etherealised odour reminds one of the peculiar smell
of certain rotten apples. The female, larger than the male, lays
her eggs, which are, comparatively speaking, of a tolerable size
(Fig. 62, _b_), at some depth underground. The young, when hatched,
resemble their parents, except that they are white, and possess
merely the rudiments of wings.
If the mole-cricket, in its subterranean progress, encounters any
roots, it cuts them with its mandibles, not to feed upon them, but
to get rid of an obstacle; hence the mischief of which the farmer
accuses it, though this slight amount of injury is altogether
outweighed by its services in destroying a swarm of insects.
Perhaps, therefore, we must not blame the farmer for the hostility
with which he pursues it, especially if we are to accept as a true
picture of its doings the sketch recently drawn by a popular writer:--
Public-domain text, read in full here on John Shaqi.
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