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Updated: May 7, 2025
Motionless, with her head turned towards the door of the house, she waits for the Bee to finish her business. The latter reappears at last and, for a few seconds, stands on the threshold, with her head and thorax outside the hole. The Gnat, on her side, does not stir. Often, they are face to face, separated by a space no wider than a finger's breadth. Neither of them shows the least excitement.
These nerves assist in controlling respiration and are called the phrenic nerves. Find other nerves going to different parts of the thorax. Remove the heart and lungs. Find in the back part of the thoracic cavity, on each side of the spinal column, a number of small "knots" of nervous matter joined together by a single nerve. These are sympathetic ganglia.
Thanks to a flexible neck, set freely upon the thorax, the head can turn to right or left as on a pivot, bow, or raise itself high in the air. Alone among insects, the Mantis is able to direct its gaze; it inspects and examines; it has almost a physiognomy. There is a very great contrast between the body as a whole, which has a perfectly peaceable aspect, and the murderous fore-limbs.
This is the stroke of the Philanthus, who kills her Bee by stinging her from below, under the chin. The Scolia needed a motionless but not dead victim, one that would supply fresh victuals; she will now have only a corpse, which will soon go bad and poison the larva. With a slant towards the thorax, the sting wounds the little mass of nerve-cells in the thorax.
These four bones are the sacrum and the coccyx, which have been described, and the two hip bones. Thorax. They are united to the sacrum behind and joined to each other in front. On the outer side of each hip bone is a deep cup, or socket, called the acetabulum, resembling an ancient vinegar cup, into which fits the rounded head of the thigh bone.
The huntress is there on the instant to operate on the evicted animal. I have barely time to draw near to watch the tragedy when the victim is paralysed by a thrust of the sting in the thorax. Here at last, in all its Machiavellian cunning, is the shrewd method of the Pompilus.
They moulted four times, each producing slight changes until the third, when the body took on a greenish tinge, delicate and frosty in appearance. The heads were yellow with touches of black, and the anal shield even stronger yellow, with black. At the last moult there came a touch of red on the thorax, and of deep blue on the latter part of the body.
There were beautiful markings of very dark colour and white on the thorax, head, shoulders, and back wings next the body. The big eyes, quite the largest of any moth I remember, reminded me of owl eyes in the light. The antennae, dark, grey-brown on top, and white on the under side, turned back and drooped beside the costa, no doubt in the position they occupied in the pupa case.
Sellheim, carefully investigating castrated horses, swine, oxen and fowls, found retardation of ossification, long and slender extremities, long, broad, but low skull, relatively smaller pelvis and small thorax.
They formed a right angle with their single trunk, which commenced at the lower part of the thorax of each. They had a single genital fissure and the external organs of generation of a female.
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