" ON HIS KNEES, and with his chin level with the top of the table, Stephen watched the male mantis step cautiously towards the female mantis. She was a fine strapping green specimen, and she stood upright on her four back legs, her front pair dangling devoutly; from time to time a tremor caused her heavy body to oscillate over the thin suspending limbs, and each time the brown male shot back. He advanced lengthways, with his body parallel to the table-top, his long, toothed, predatory front legs stretching out tentatively and his antennae trained forwards: even in this strong light Stephen could see the curious inner glow of his big oval eyes. The female deliberately turned her head through forty-five degrees, as though looking at him. ‘Is this recognition?’ asked Stephen, raising his magnifying glass to detect some possible movement in her feelers. ‘Consent?’ The brown male certainly thought it was, and in three strides he was upon her; his legs gripped her wing-covers; his antennae found hers and began to stroke them. Apart from a vibratory, well-sprung quiver at the additional weight, she made no apparent response, no resistance; and in a little while the strong orthopterous copulation began. Stephen set his watch and noted down the time in a book, open upon the floor. Minutes passed. The male shifted his hold a little. The female moved her triangular head, pivoting it slightly from left to right. Through his glass Stephen could see her sideways jaws open and close; then there was a blur of movements so rapid that for all his care and extreme attention he could not follow them, and the male’s head was off, clamped there, a detached lemon, under the crook of her green praying arms. She bit into it, and the eye’s glow went out; on her back the headless male continued to copulate rather more strongly than before, all his inhibitions having been removed. ‘Ah,’ said Stephen with intense satisfaction, and noted down the time again. Ten minutes later the female took off three pieces of her mate’s long thorax, above the upper coxal joint, and ate them with every appearance of appetite, dropping crumbs of chitinous shell in front of her. The male copulated on, still firmly anchored by his back legs. "
― Patrick O'Brian , Master and Commander (Aubrey & Maturin #1)