Bulletin, Tema 2The Survey, 1898 |
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Términos y frases comunes
abdomen afternoon alighted alive Ammophila antennæ aphides Astata August August 18 backward beetles began Bembex body bugs burrow capture carried caterpillar caught cell cephalothorax Cerceris ornata circling close cocoon cricket dead dragged dropped entrance excavated Fabre feet female five flew flies four fuscipennis genus going ground habits half hatched hole hunting hymenoptera inches insects instinct July July 23 killed laid larvæ little wasp lived look lump of earth malaxation males mandibles marginatus mesothorax minutes morning motionless move Nest taken o'clock once pair of legs paralyzed Pelopaeus Philanthus plant Polistes Pompilidae Pompilus posterior prey prothorax quinquenotatus quivering rubrocinctum scelestus seemed seen seized side solitary wasps sometimes species Sphex spider spinolae spot stimulation sting stored strix stung tarsi third Thomisus thorax tion took touched tunnel urnaria victim wasp larva watching wings
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Página 18 - In filling up her nest she put her head down into it and bit away the loose earth from the sides, letting it fall to the bottom of the burrow, and then, after a quantity had accumulated, jammed it down with her head. Earth was then brought from the outside and pressed in, and then more was bitten from the sides. When, at last, the filling was level with the ground, she brought a quantity of fine grains of dirt to the spot, and, picking up a small pebble in her mandibles, used it as a hammer in pounding...
Página 227 - instinct,'" they say, "we place all complex acts which are performed previous to experience and in a similar manner by all members of the same sex and race, leaving out as non-essential, at this time, the question of whether they are or are not accompanied by consciousness.
Página 96 - The wasp stroked the young hoppers, and sipped up the honey when it was exuded, just like the ants. When an ant came up to a cluster of leaf-hoppers attended by a wasp, the latter would not attempt to grapple with its rival on the leaf, but would fly off and hover over the ant ; then when its little foe was well exposed, it would dart at it and strike it to the ground. The action was so quick that I could not determine whether it struck with its fore-feet or its jaws, but I think it was with the...
Página 211 - Our Ammophila refused to make use of her burrow after we had drawn some deep lines in the dust before it. The same annoyance is exhibited when there is any change made near the spot upon which the prey of the wasp, whatever it may be, is deposited temporarily.
Página 225 - I had made myself, as a boy, a fly-trap, like a pigeon-cote. The flics were attracted by scattered sugar, and caught as soon as they had entered the cage. Behind the trap was a second box, separated from it by a sliding-door, which could be opened or shut at pleasure. In this I had put a large garden spider. Cage and box were provided with glass windows on the top, so that I could quite well observe anything that was going on inside. At first nothing particular happened. When some flies had been...
Página 23 - Her btops were so frequent and so lengthy that nearly an hour was occupied in going about twenty-five feet. When, at last, the nest was reached, the plug was removed from the entrance and the caterpillar dragged in, but almost immediately the wasp came out backwards with the point of an egg projecting from the extremity of her abdomen. She ran around and around the nest in a distracted way four or five times and then went back, dragged the caterpillar out, and carried it away. The egg came out further...
Página 2 - Bembex, a number of individuals build close together, forming a colony. The nests may be made of mud, and attached for shelter under leaves, rocks, or eaves of buildings, or may be burrows hollowed out in the ground, in trees or in the stems of plants. The adult wasp lives upon fruit or nectar, but the young grub or larva must have animal food ; and here the parent wasp shows a rigid conservatism, each species providing the sort of food that has been approved by its family for generations, one taking...
Página 18 - ... others. We remember her as the most fastidious and perfect little worker of the whole season, so nice was she in her adaptation of means to ends, so busy and contented in her labor of love, and so pretty in her pride over her completed work.
Página 226 - ... and on the other between the closed slide and the unpleasant feeling of hunger and inhibited impulse. Now in her free life the spider had always employed her web in the service of the nutritive impulse. Associations had therefore grown up between the definite positions of her web and definite peculiarities of the objects to which it was attached, as well as changes which it produced in the positions of certain of these objects, — leaves, small twigs, etc. The impression of the falling slide,...
Página 218 - To judge from the results, they scarcely sting twice alike, since the victims of the same wasp may be killed at once or may live from one day to six weeks, or perhaps ultimately recover.