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Bates' view, hereafter to be explained, that many insects mimic the Lampyridae closely, in order to be mistaken for them, and thus to escape destruction. He further believes that the luminous species profit by being at once recognised as unpalatable. It is probable that the same explanation may be extended to the Elaters, both sexes of which are highly luminous.
Already on a sandy beach outside, we had caught sight of unmistakable coconut trees; some of them, however, dying, dead, even snapped short off, either by the force of the hurricane, or by the ravages of the beetle, which seems minded of late years to exterminate the coconut throughout the West Indies; belonging, we are told, to the Elaters fire-fly, or skipjack beetles.
Could we have secured a band of elaters to go before us, we might, without difficulty, have found our way; but as neither they nor the fireflies could be depended on, we should have to make the expedition in darkness. There was, however, a bright moon in the sky, which, provided we kept along the edge of the river, would give us sufficient light.
Eland, development of the horns of the. Elands, sexual differences of colour in. Elaphomyia, sexual differences in. Elaphrus uliginosus, stridulation of. Elaps. Elateridae, proportion of the sexes in. Elaters, luminous.
Beautiful as is the English glow-worm, the fire-flies and fire-beetles, the elaters of the tropics, far surpass them in brilliancy. Their light is redder and more candle-like, and being alternately emitted and concealed, each of the tiny vermilion flames performing its part in the aerial mazy dance, the spectacle is singularly beautiful.
The lights of the former were red, and bright as those of the brightest candle; and being alternately emitted and concealed, each of the tiny flames performing its own part in the mazy dance, they produced a singularly beautiful spectacle. The fireflies, however, disappeared shortly afterwards, when a number of large beetles, called elaters, took their place, displaying both red and green lights.
Now and then a green light is displayed, and then the mingling of the two complementary colours, red and green, in the evolutions of flight, surpasses description. Even the brilliant elaters, however, will scarcely enable the traveller to find his way amid the darkness through the forest. Wallace describes a midnight walk he was compelled to take.
Of those diamonds of the night, the fire-flies and fire-beetles, there are numerous species. One of the most abundant and of much larger dimensions than the rest of the elaters or beetles pyrophorus noctilucus, called by the natives cocuja, displays both red and green light.
The wings of the former fanned our faces, while the latter uttered a harsh croak or shriek as it flew through the gloom. Generally all around us was silent and dark, an oppressive gloom pervading the atmosphere, except when we passed through a swarm of fireflies or elaters, as we now and then did.
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