Insect bite

“ The bite is not felt until the insect has had time to bury the whole of his head, and in the case of the most minute and most troublesome species, nearly his whole body, under the skin, where he fastens himself with such tenacity, that he will sooner suffer his head and body to be dragged apart than relinquish his hold. ”

“ The insect, therefore, is attracted to light or is becoming attracted to light, is a night-flier, and enters houses through open windows. Among the several cases coming under the writer's observation of bites by this insect, one has been reported by the well-known entomologist Mr. Charles Dury, of Cincinnati, Ohio, in which this species (M. picipes) bit a man on the back of the hand, making a bad sore. In another case, where the insect was brought for our determination and proved to be this species, the bite was upon the cheek, and the swelling was said to be great, but with little pain. ”

“ No thought seems to have been given to the conditions and the characteristics of the individual species of blood-sucking insects, which make disease transmission possible."
He points out that "in order to be a potential transmitter of human blood-parasites, an insect must be closely associated with man and normally have opportunity to suck his blood repeatedly. It is not sufficient that occasional specimens bite man, as, for example, is the case with forest mosquitoes. ”

“ About thirty-six hours after being bitten, the Mole died during the night, and certainly not from starvation, for there were still many live insects in the cage.
The bite of my Tarantula is therefore dangerous to other animals than insects: it is fatal to the Sparrow, it is fatal to the Mole. I did not make any more experiments, but I should say that people had better beware of the bite of this Spider. It is not to be trifled with.
Think, just for a moment, of the skill of the Spider, the insect-killer, as contrasted with the skill of the Wasps, the insect-paralyzers. ”

“ Just as certain individuals may be poisoned by what, for others, are common articles of food, so some persons may be abnormally susceptible to insect poison. Thus, the poison of a bee sting may be of varying severity, but there are individuals who are made seriously sick by a single sting, regardless of the point of entry. Some individuals scarcely notice a mosquito bite, others find it very painful, and so illustrations of this difference in individuals might be multiplied. ”

“ The general symptoms, observed in a few cases, where violent, may probably be ascribed to shock and nervousness. But the marked swelling and pain cannot be thus dismissed. Medical men believe that the insect, in its various prowlings for food, thrusts its exploring beak into decaying animal and vegetable matter and thus, in a sense, so poisons it that when it comes into contact with human blood, a rapid local infection is set up—not through any specific poison, as in spider bite or bee sting, but by the agency of the putrefactive germs collected on the weapon. ”

“ No one needs to be told to try to keep a house, or a room, clear of fleas, bed-bugs, or lice; indeed to have these creatures about is considered a mortal disgrace. Not only is their bite very unpleasant, but they may convey a variety of diseases, including plague and blood poisonings of various sorts. But there is another insect pest far commoner and far more dangerous than either fleas or bed-bugs, whose presence we should feel equally ashamed of ”

“ It attacks, however, only domesticated animals, for wild beasts range over the country infested by it with impunity; while human beings are scarcely more annoyed by it than they are by flea-bites. It is confined to certain localities, and is never known to shift its haunts. He told me that it was found generally in the bush or among reeds. Though the insect is small, yet the poison it contains is of so virulent a nature that its bite is as deadly to horses and oxen as that of the most venomous serpent. ”

“ Some Illustrations of Direct Inoculation of Disease Germs by Arthropods
In discussing poisonous arthropods, we have already emphasized that species which are of themselves innocuous to man, may occasionally introduce bacteria by their bite or sting and thus cause more or less severe secondary symptoms. That such cases should occur, is no more than is to be expected. The mouth-parts or the sting of the insect are not sterile and the chances of their carrying pyogenic organisms are always present. ”

“ Each of these lobes is made up of a layer of secreting cells (Fig. 71) which produces the saliva that is poured into the wound as soon as the insect pierces the skin of the victim, and we shall see, too, that the malarial germs also collect in these glands to be carried by the saliva to the new host.
EFFECTS OF THE BITE
After a mosquito has bitten a person and withdrawn the stylets, a small area about the puncture whitens, then soon becomes pink and begins to swell, then to itch and burn. Some people suffer much more from the bites of mosquitoes than do others. ”

“ In certain cases there develops from one such single bite an urticaria that extends over a large part of the body. The manner by which an irritating substance is introduced into the skin upon biting by the bed bug and also by the flea is clear. The bite is followed by a feeling of itching, which is liable to rob nervous persons of their sleep. Sensitive individuals are upset even by the fleas moving over the surface of the skin during their rest at night.
Treatment consists in extreme cleanliness, capture of the parasites, sprinkling the body and bed-linen with insect powders. ”

“ This little insect is apparently always hungry, is never tired, and wages a relentless fight upon every inch of the white man's epidermis that is exposed to its reach, even penetrating the hair and beard of a man, and leaving the effects of its poisonous bite. ”

“ Take the mosquito pest, for instance: One who begins to feel irritation at the sound made by the wings of the insect, is already creating within himself a condition favorable to inflammation from the effects of the bite. ”

“ Some of our men, for example, may be said to have died of the bite of a mosquito, for the bite of that little insect occasioned a grievous itch, and the part being constantly scratched, soon festered and mortified, so that it was necessary to cut off the leg, after which the poor men fevered and died. ”

“ Prophylactic measures would seem to consist in the immediate disinfection of insect bites by tincture of iodine, and by avoidance of areas known to be infested with snakes and lizards, and insects that prey on them and man indifferently. ”

“ Many insects sting without poisoning the wound; the bite of the mosquito, black fly, flea, the bed bug, and other hemipterous insects, are simply punctured wounds, the saliva introduced being slightly irritant, and to a perfectly healthy constitution they are not poisonous, though they may grievously afflict some persons, causing the adjacent parts to swell, and in some weak constitutions induce severe sickness. ”

“ For more than a century these little flies have been recognized as among the most serious pests of stock, particularly in the south where, besides the actual loss by death of many animals yearly, the annoyance is so great as to sometimes make it impossible to work in the field. Human beings are often attacked, and as the bite is poisonous and very painful great suffering may result and cases of deaths from such bites have been reported. ”

“ Thus massed into a single awl-like beak, the mosquito, without any apparent effort, thrusts them all except the labium into the flesh. Her hind body may be seen tilling with the red blood, until it cries quits, and the insect withdraws its sting and flies sluggishly away. ”

“ They are fully winged when adult, and they fly with ease, entering houses on the wing, especially being attracted by lights in windows; they also run swiftly. Like the bed bug they conceal themselves during the day and come out at night and bite the sleeper. The effect of the bite is very varied, but as a rule a sore, itching wound, accompanied by burning pain and swellings, which may extend over a good deal of the body, occur. ”

“ The female lives in the sand and attacks man, on whom she lives, boring into the skin about the toe nail, usually, and laying her eggs under the skin, which gives rise to itching at first and then violent pain. The insect sucks blood and grows as it gorges itself, producing a white swelling of the skin in the center of which is seen a black spot, the front part of the flea. The flea after expelling its eggs drops off and dies. People with habitually sweaty feet are exempt from attacks of the pest. ”

“ The pain is caused entirely by the action of the poison in breaking up the blood, and, as the first act of a biting mosquito is to introduce the poison into the wound, the pain and inflammation will be the same, whether the insect gets its meal or not. ”

“ Piercing or biting forms may inject an irritating or poisonous saliva into the wound caused by their mouth-parts.
2. Stinging forms may inject a poison, from glands at the caudal end of the abdomen, into wounds produced by a specially modified ovipositer, the sting.
3. Nettling properties may be possessed by the hairs of the insect.
4. Vescicating, or poisonous blood plasma, or body fluids are known to exist in a large number of species and may, under exceptional circumstances, affect man. ”

“ I doubt if the sting of twenty tarantulas could cause the death of a healthy child, and I am quite sure that a poison-ivy blister and the bite of a fire-ant are more painful than the sting of a centipede. An hysterical lady may succumb to the bite of a common gadfly, but I hold that only co-operative insects—termites, wasps, bumble-bees, etc.—could ever make away with a normally constituted human being. ”

“ Grasping her prey with her legs and jaws, in another moment the wriggling body is passive in her grasp, subdued by the potent anæsthetic of her sting—a hypodermic injection which instantly produces the semblance of death in its insect victim, reducing all the vital functions to the point of dissolution, and then holds them suspended—literally prolongs life, it would sometimes seem, even beyond its normal duration—by a process which I might call ductile equation. ”

“ Wounds inflicted by large spiders, centipedes, tarantulae, and scorpions have proved fatal. Even in our country deaths, preceded by gangrene, have sometimes followed the bite of a mosquito or a bee, the location of the bite and the idiosyncrasy of the individual probably influencing the fatal issue. In some cases, possibly, some vegetable poison is introduced with the sting. Hulse, U.S.N., reports the case of a man who was bitten on the penis by a spider, and who subsequently exhibited violent symptoms simulating spinal meningitis, but ultimately recovered. ”

“ These would require, first, the presence of great numbers of microparasites on the skin or in the blood of a man or animal sick with some disease transmissible to man by subcutaneous inoculation; second, it would probably be necessary that there should be many bugs biting in order that one or more of them should bite some healthy person within a rather short space of time after these insects had fed on the infected individual. ”

“ When actually stung, the first thing to be done is to extract the weapon, which the unfortunate insect almost invariably tears out of its body, with the poison-bag and muscles, as it flies off. If left in the flesh, the muscles, by their automatic action, drive the barbs in deeper and deeper, the poison also flowing more copiously into the wound. Directly the sting is removed, avoid all rubbing of the part affected, but at once press upon the puncture a hollow key, taking care that the exact spot pierced comes in the centre of the opening of the key-tube. ”

“ House crickets and cockroaches are plentiful, as well as lizards, and frightful spiders weave their webs. One does not count ticks, flies of sorts, bugs, fleas, mosquitoes, and small ants, and the fatal bug of Miana, which vary in size, after suction, from almost invisible dimensions to three-quarters of an inch. The bite does not poison, but the irritation causes sad consequences. ”

“ In conclusion, it should be noted that the medical and entomological literature of the past few years abounds in suggestions, and in unsupported direct statements that various other diseases are insect-borne. Knab (1912) has well said "Since the discovery that certain blood-sucking insects are the secondary hosts of pathogenic parasites, nearly every insect that sucks blood, whether habitually or occasionally, has been suspected or considered a possible transmitter of disease. ”

“ Rose-bugs are also eaten greedily by domesticated fowls; and when they become exhausted and fall to the ground, or when they are about to lay their eggs, they are destroyed by moles, insects, and other animals, which lie in wait to seize them. Dr. Green informs us that a species of dragon-fly, or devil’s needle, devours them. He also says that an insect, which he calls the enemy of the cut-worm, probably the larva of a Carabus, or predaceous ground-beetle, preys on the grubs of the common dor-bug. ”

“ When we observe, now, that different insects feed in two quite different ways, some by means of the biting type of mouth parts, and others by means of the sucking type, it becomes evident that we must know which kind of insect we are dealing with in the case of pests we may be trying to control. A biting and chewing insect can be killed by the mere expedient of putting poison on the out- side of its food, if it does not become aware of the poison and desist from eating it ”