Again, Büchner (loc. cit., p. 297) gives the following account in the words of his informant, Herr H. Löwenfels, who himself witnessed the incident:—
I here found a robber-wasp busied in lifting from the ground a large fly which it had apparently killed. It succeeded indeed in its attempt, but had scarcely raised its prey a few inches above the ground when the wind caught the wings of the dead fly, and they began to act like a sail. The wasp was clearly unable to resist this action, and was blown a little distance in the direction of the wind, whereupon it let itself fall to the ground with its prize. It now made no more attempts to fly, but with eager industry pulled off with its teeth the fly's wings which hindered it in its object. When this was quite done it seized the fly, which was heavier than itself, and flew off with it untroubled on its journey through the air at a height of about five feet.
Büchner also records the two following remarkable observations, which from being so similar corroborate one another. The first is received from Herr Albert Schlüter, who writing from Texas says that he there saw a cicada pursued by a large hornet, which threw itself upon its prey and seemed to sting it to death:—
The murderer walked over its prey, which was considerably larger than itself, grasped its body with its feet, spread out its wings, and tried to fly away with it. Its strength was not sufficient, and after many efforts it gave up the attempt. Half a minute went by; sitting astride on the corpse and motionless—only the wings occasionally jerking—it seems to reflect, and indeed not in vain. A mulberry tree stood close by, really only a trunk—for the top had been broken off, clearly by the last flood—of about ten or twelve feet high. The hornet saw this trunk, dragged its prey toilsomely to the foot of it, and then up to the top. Arrived thereat, it rested for a moment, grasped its victim firmly, and flew off with it to the prairies. That which it was unable to raise off the ground it could now carry easily once high in the air.
The other instance is as follows:—
Th. Meenan ('Proc. of the Acad. of Nat.,' Philadelphia, Jan. 22, 1878) observed a very similar case with Vespa maculata. He saw one of these wasps try in vain to raise from the ground a grasshopper it had killed. When all its efforts proved to be in vain, it pulled its prey to a maple tree, about thirty feet off, mounted it with its prize, and flew away from it. 'This,' adds the writer, 'was more than instinct. It was reflection and judgment, and the judgment was proved to be correct.'
Depriving bees of their antennæ has the effect of producing an even more marked bewilderment than results from this operation in the case of ants. A queen thus mutilated by Huber ran about in confusion, dropping her eggs at random, and appeared unable to take with precision the food that was offered her. She showed no resentment to a similarly mutilated stranger queen that was introduced: the workers also heeded not the mutilated stranger; but when an unmutilated stranger was introduced they fell upon her. When the mutilated queen was allowed to escape, none of the workers followed.