harrows, rollers, and cultivators will be effective here. The adult
grasshoppers must for the most part be destroyed with fire. [Heaps of
straw and brushwood are soaked with paraffin and then set on fire.]
The =Mole Cricket= (_Gryllotalpa vulgaris_).
Body stout and flattened. Antennæ, palps, and tail-filaments very long.
Fore legs broad, modified into true “digging legs,” superficially
resembling the feet of a mole. Fore wings broad, but short, leathery. In
a state of rest, the hind wings lie on the back, like a couple of tails.
Colour dark brown. Principally occurs on peaty soils mixed with sand or
clay, also on all soils which have become of firm consistency by the
application of much manure. Their presence is therefore local. Very
early in the year the mole-cricket leaves its winter hiding-place, and
begins to make its passages near the surface. Where the female makes her
nest the passage turns downward a little. The nest is 1⅗ of an inch in
diameter, and its walls are compacted by the pressure of the hard body.
The number of eggs is from 200 to 250; they are laid in lots with a few
intermediate spaces. The young creep out in the spring, and are
wingless. To begin with, they are white, but quickly become brown. The
mother guards her young very carefully. These grow tolerably fast, and
first begin to lead an independent life after the second moult. In
October and November they undergo a third moult. Then, still in a
wingless condition, they hide themselves, and do not moult again till
April or May, when the wing-cases appear; while after the fifth moult
(May, June) the mole-cricket becomes an adult insect, capable of
reproducing. This insect is found in cornfields, gardens, grassland, and
meadows, also in orchards and woods. It gnaws the roots of all kinds of
plants, and often effects great damage in this way. The mole-cricket is
also harmful on account of its passages, which are dug close to the
surface. In this way it lifts young plants out of the soil; while older
plants are killed, both by its gnawing and by its digging. Such plants
can often be pulled up by grasping the leaves. All the plants wither in
the place where the nest is found. Dry, cold winters kill almost all the
mole-crickets; much drought in summer and also continuous wet are
unfavourable to them. _Enemies_: moles, rooks, etc., butcher-birds,
starlings, and the larger ground beetles. _Remedies_: Destruction of the
nests, in June, to begin with, but also to be continued later. In those
parts of a field where the plants are yellow or withered in a large
circular patch (some 39 inches in diameter) the nest is felt for with
the finger, and carefully lifted up, so that the eggs do not fall out.
Mole-crickets can also be caught by means of flower-pots. The apertures
in the bottoms of these are stopped with corks, and they are then sunk
in the soil with their mouths on a level with the mole-cricket passages;
Public-domain text, read in full here on John Shaqi.
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