An Introduction to Entomology: Vol. 2 / or Elements of the Natural History of the Insects

by William Kirby; William Spence

Naturalists had observed, that when there were two queens in the same hive, one of them soon perished; but some supposed (this was the opinion of Schirach and Riem) that the workers destroyed the supernumeraries. Reaumur, however, conjectured that these queens attacked each other; and his conjecture has been since confirmed by the actual observation of other naturalists. Blassiere, the translator of Schirach, tells us, as what he had himself witnessed, that the strongest queen kills her rival with her sting; and the same is asserted by Huber, whose opportunities of observation were greater than those of any of his precursors[162].

The queen that is first liberated from her confinement, and has assumed the perfect or imago state (it is to be supposed that the author is here speaking of a hive which has lost the old queen), soon after this event goes to visit the royal cells that are still inhabited. She darts with fury upon the first with which she meets; by means of her jaws she gnaws a hole large enough to introduce the end of her abdomen, and with her sting, before the included female is in a condition to defend herself or resist her attack, she gives her a mortal wound. The workers, who remain passive spectators of this assassination, after she quits the victim of her jealousy, enlarge the breach that she has made, and drag forth the carcase of a queen just emerged from the thin membrane that envelopes the pupa. If the object of her attack be still in the pupa state, she is stimulated by a less violent degree of rage, and contents herself with making a breach in the cell: when this happens, the death of the inclosed insect is equally certain, for the workers enlarge the breach, pull it out, and it perishes[163]. If it happens, as it sometimes does, that two queens are disclosed at the same time, the care of Providence to prevent the hive from being wholly despoiled of a governor is singularly manifested by a remarkable trait in their instinct, which, when mutual destruction seems inevitable, makes them separate from each other as if panic-struck. "Two young queens," says M. Huber, "left their cells one day, almost at the same moment;—as soon as they came within sight, they darted upon each other, as if inflamed by the most ungovernable anger, and placed themselves in such an attitude, that the antennæ of each were held by the jaws of its antagonist; head was opposed to head, trunk to trunk, abdomen to abdomen; and they had only to bend the extremity of the latter, and they would have fallen reciprocal victims to each other's sting." But nature having decreed that these duels should not be fatal to both combatants, as soon as they were thus circumstanced a panic fear seemed to strike them, and they disengaged themselves, and each fled away. After a few minutes were expired, the attack was renewed in a similar manner with the same issue; till at last one suddenly seizing the other by her wing, mounted upon her and inflicted a mortal wound[164].

The combats I have here described to you took place between virgin queens; but M. Huber found that those which had been impregnated were actuated by the same animosity, and attacked royal cells with a fury equally destructive. When another fertile queen had been introduced into this hive, a singular scene ensued, which proves how well aware the workers are that they cannot prosper with two sovereigns. Soon after she was introduced, a circle of bees was formed round the stranger, not to compliment her on her arrival, or pay her the usual homage, but to confine her, and prevent her escape; for they insensibly agglomerated themselves in such numbers round her, and hemmed her in so closely, that in about a minute she was completely a prisoner. While this was transacting, what was equally remarkable, other workers assembled in clusters round the legitimate queen, and impeded all her motions; so that soon she was not more at liberty than the intruder. It seemed as if the bees foresaw the combat that was to ensue between the two rivals, and were impatient for the event; for they only confined them when they appeared to avoid each other. To witness the homage, respect and love that they usually manifest to their lawful ruler; the anxiety concerning her which they often exhibit: and the distrust which for a time (as we shall see hereafter) they usually show towards strange ones even when deprived of their own; one would expect that, rather than permit such a perilous combat, they would unite in the defence of their sovereign, and cause the interloper to perish under the stroke of their fatal stings. But no; the contest for empire must be between the rival candidates: no worker must interfere in any other way than that which I have described; no contending armies must fight the battles of their sovereigns, for the law of succession seems to be "detur fortiori." But to return to my narrative. The legitimate queen appearing inclined to move towards that part of the comb on which her rival was stationed, the bees immediately began to retire from the space that intervened between them, so that there was soon a clear arena for the combat. When they could discern each other, the rightful queen rushing furiously upon the pretender, seized her with her jaws near the root of the wings, and, after fixing her without power of motion against the comb, with one stroke of her sting dispatched her. If ever-so-many queens are introduced into a hive, all but one will perish, and that one will have won the throne by her own unassisted valour and strength. Sometimes a strange queen attempts of herself to enter a hive: in this case the workers, who are upon the watch and who examine every thing that presents itself, immediately seize her with their jaws by the legs or wings, and hem her in so straitly with a clustered circle of guards, turning their heads on all sides towards her, that it is impossible for her to penetrate within. If they retain her prisoner too long, she dies either from the want of food or air, but never from their stings[165].

Here you may perhaps feel curious to know, supposing the reigning queen to die or be killed, and the bees to have discovered their loss, whether they would then receive a foreigner that offers herself to them or is introduced amongst them. Reaumur says they would do this immediately[166]; but Huber, who had better means of observing them, and studied them with more undivided attention, affirms that this will not be the case, unless twenty-four hours have elapsed since the death of the old queen. Previously to this period, as if they were absorbed by grief at their calamity, or indulged a fond hope of her revival, an intruder would be treated exactly as I have described. But when the period just mentioned is passed, they will receive any queen that is presented to them with the customary homage, and she may occupy the vacant throne[167].

I must now beg you to attend to what takes place in the second case that I mentioned, where queens are wanted to lead forth swarms. Here you will, with reason, suppose that nature has instilled some instinct into the bees, by which these necessary individuals are rescued from the fury of the reigning sovereign.

Did the old queen of the hive remain in it till the young ones were ready to come forth, her instinctive jealousy would lead her to attack them all as successively produced; and being so much older and stronger, the probability is that she would destroy them; in which case there could be no swarms, and the race would perish. But this is wisely prevented by a circumstance which invariably takes place—that the first swarm is conducted by this queen, and not by a newly disclosed one, as Reaumur and others have supposed. Previously to her departure, after her great laying of male eggs in the month of May, she oviposits in the royal cells when about three or four lines in length, which the workers have in the mean time constructed. These however are not all furnished in one day,—a most essential provision, in consequence of which the queens come forth successively, in order to lead successive swarms. There is something singular in the manner in which the workers treat the young queens that are to lead the swarms. After the cells are covered in, one of their first employments is to remove here and there a portion of the wax from their surface, so as to render it unequal; and immediately before the last metamorphosis takes place, the walls are so thin that all the motions of the inclosed pupa are perceptible through them. On the seventh day the part covering the head and trunk of the young female, if I may so speak, is almost entirely unwaxed. This operation of the bees facilitates her exit, and probably renders the evaporation of the superabundant fluids of the body of the pupa more easy.

You will conclude, perhaps, when all things are thus prepared for the coming forth of the inclosed female, that she will quit her cell at the regular period, which is seven days:—but you would be mistaken. Were she indeed permitted to pursue her own inclinations, this would be the case: but here the bees show how much they are guided in their instinct by circumstances and the wants of their society; for did the new queen leave her cell, she would immediately attack and destroy those in the other cells; a proceeding which they permit, as I have before stated, when they only want a successor to a defunct or a lost sovereign. As soon therefore as the workers perceive—which the transparency of the cell permits them to do—that the young queen has cut circularly through her cocoon, they immediately solder the cleft up with some particles of wax, and so keep her a prisoner against her will. Upon this, as if to complain of such treatment, she emits a distinct sound, which excites no pity in the breasts of her subjects, who detain her a prisoner two days longer than nature has assigned for her confinement. In the interim, she sometimes thrusts her tongue through the cleft she has made, drawing it in and out till she is noticed by the workers, to make them understand that she is in want of food. Upon perceiving this they give her honey, till her hunger being satisfied she draws her tongue back—upon which they stop the orifice with wax[168].

You may think it perhaps extraordinary that the workers should thus endeavour to retard the appearance of their young females beyond its natural limit; but when I explain to you the reason for this seeming incongruity of instinct, you will adore the wisdom that implanted it. Were a queen permitted to leave her cell as soon as the natural term for it arrived, it would require some time to fit her for flight, and to lead forth a swarm; during which interval a troublesome task would be imposed upon the workers, who must constantly detain her a prisoner to prevent her from destroying her rivals, which would require the labours and attention of a much larger number than are necessary to keep her confined to her cell. On this account they never suffer her to come forth till she is perfectly fit to take her flight. When at length she is permitted to do this, if she approaches the other royal cells, the workers on guard seem greatly irritated against her, and pull and bite and chase her away; and she enjoys tranquillity only while she keeps at a distance from them. As her instinct is constantly urging her to attack them, this proceeding is frequently repeated. Sometimes standing in a particular and commanding attitude, she utters that authoritative sound which so much affects the bees; they then all hang down their heads and remain motionless; but as soon as it ceases, they resume their opposition. At last she becomes violently agitated, and communicating her agitation to others, the confusion more and more increases, till a swarm leaves the hive, which she either precedes or follows. In the same manner the other young queens are treated while there are swarms to go forth; but when the hive is sufficiently thinned, and it becomes troublesome to guard them in the manner here described, they come forth unnoticed, and fight unimpeded till one alone remains to fill the deserted throne of the parent hive.—You see here the reason why the eggs that produce these queens are not laid at the same time, but after some interval, that they may come forth successively. For did they all make their appearance together, it would be a much more laborious and difficult task to keep them from destroying each other.

When the bees thus delay the entrance of the young queens into their world, they invariably let out the oldest first; and they probably know their progress to maturity by the emission of the sound lately mentioned. The accurate Huber took the trouble to mark all the royal cells in a hive as soon as the workers had covered them in, and he found that they were all liberated according to seniority. Those first covered first emit the sound, and so on successively; whence he conjectures that this is the sign by which the workers discover their age. As their captivity, however, is sometimes prolonged to eight or ten days, this circumstance in that time may be forgotten. In this case he supposes that their tones grow stronger as they grow older, by which the workers may be enabled to distinguish them. It is remarkable that no guard is placed round the mute queens bred according to the Lusatian method, which, when the time for their appearance is come, are not detained in captivity a single moment; but, as you have heard, are left to fight, conquer, or die[169].

You must not think, however, from what I have been saying, that the old queen never destroys the young ones previously to her leading forth the earliest swarm. She is allowed the most uncontrolled liberty of action; and if she chooses to approach and destroy the royal cells, her subjects do not oppose her. It sometimes happens, when unfavourable weather retards the first swarm, that all the royal progeny perishes by the sting of their mother, and then no swarm takes place. It is to be observed that she never attacks a royal cell till its inhabitant is ready to assume the pupa, therefore much will depend upon their age. When they arrive at this state, her horror of these cells, and aversion to them, are extreme: she attacks, perhaps, and destroys several; but finding it too laborious, for they are often numerous, to destroy the whole, the same agitation is caused in her as if she were forcibly prevented, and she becomes disposed to depart, rather than remain in the midst of her rivals, though her own offspring.