It would be a real misfortune for science if every frog had been born a typical amphibian, as some tree-toads actually are, and if every insect had emerged a fully formed adult, as some aphides very nearly do.
It lives upon the gorse just as parasitically as the little green aphides live upon our rose-bushes.
Darwin has suggested, clear our hot-houses of Aphides by their means, but render our crops of hops much more certain than they now are.
The foliage of one of our greatest favourites, the rose, often loses all its loveliness and lustre from the excrements of the Aphides that prey upon it.
Those Aphides that transpire a cottony excretion are now considered as belonging to a distinct genus, under the name of Myzoxyla.
The havoc which these grubs make amongst the Aphidesis astonishing.
The best remedy in this case, which also tends to set the beans well, and improves both their quality and quantity, is to top them as soon as the Aphides begin to appear, and carrying away the tops to burn or bury them.
The all-attacking Aphides do not pass over them, and the former especially are sometimes greatly injured by them; their excrement falling upon the berries renders them clammy and disgusting, and they soon turn quite black from it.
The same indistinct ideas might have induced them to fell all their larches and beeches, since they also are infested by Aphides which transpire a similar substance.
The aphides illustrate parthenogenesis; hermaphrodite forms produced from eggs produce viviparous wingless forms, which again produce others like themselves, and thus multiply during summer, one individual giving rise to millions.
By stroking the aphides with their antennae they cause them to emit the sweet fluid, which the ants then greedily sip up.
The aphides are furnished with an inflected beak, and feelers longer than the thorax.
A quite common, though erroneous, belief in England is, that Aphides are produced, or brought by, a northern or eastern wind.
The Aphides are remarkable for secreting a sweet, viscid fluid, known by the name of Honey-dew, the origin of which has puzzled the world for ages.
It is certain, from the observations of Huber, that the aphides show no dislike to the ants: if the latter be not present they are at last compelled to eject their excretion.
Even the quite young aphides behaved in this manner, showing that the action was instinctive, and not the result of experience.
I removed all the ants from a group of about a dozen aphides on a dock-plant, and prevented their attendance during several hours.
But as the excretion is extremely viscid, it is no doubt a convenience to the aphides to have it removed; therefore probably they do not excrete solely for the good of the ants.
Is not the ant, therefore, entitled to be regarded as a cow-keeper, and are not the tiny little aphides his milch-cows?
The ants also take a number of aphides close to their nests, and there keep them secure and supply them with suitable food.
I have also observed another mite devouring the Aphides on the rose leaves in my garden, so that a few mites may be set down as beneficial to vegetation.
The chief cotton enemies are the cotton boll worm (Earias insulana), aphides and Capnodium.
It is particularly fond of flies, or a rose-branch covered with aphides will please it very much.
After this fast he must be placed on some spot where the aphidesare found in abundance.
Not only do the poor little aphides not fly from him, but they may be often seen creeping over the body of their enemy.
D] One of these insects which fell under the writer's notice pierced and sucked dry aphides of several different species quite indifferently.
Aphides present certain variations in structure, and, generally speaking, the one species presents four or five types (Fig.
At first only wingless forms are seen, but as the season advances the winged migratory aphides develop; at that time the foliage is so severely attacked that it becomes crumpled and functionless (Fig.
Important natural enemies of aphides and young caterpillars are the hover-flies, which can be easily recognised by their manner of flight.
The eggs are laid on plants infested by the aphides and scale insects upon which the beetles and their larvae (Fig.
Apart from their direct injurious effects, aphides are of outstanding importance, in that they transmit some of the most serious plant diseases.
The heat of the late summer destroys the aphides still on the foliage, but sufficient numbers descend underground for protection, where they live over winter.
The root-feeding aphides are wingless, and reproduce by means of eggs for several generations.
Most aphides are readily controlled by means of insecticides, such as nicotine-sulphate, or kerosene-emulsion.
Among the aphides peculiar to vegetables this is one of the most common.
Our illustration shows a piece of Apple twig with the aphides and their woolly material natural size.
John says the aphideswould be better protected in case of a shower.
No, John, not all species of aphidesmake honey dew.
It has been very carefully studied by wise men who tell us it contains no sugar and is probably used as a means of defence, as aphides have been seen to smear the faces of insect enemies with this wax.
Ants are so fond of the honey dew that certain species of aphides have been called the ants' cows, because the ants take care of them for the sake of the honey dew.
The aphides cannot stand wet weather, but after a long spell of dry weather they will be found in great abundance.
The leaves here underwent the same change of appearance, and the aphidesmet with the same untimely fate, as in the case of those subjected to the action of chloroform.
We need not go very far in our country walk to discover our aphides encircling the stems of weed and shrub, and it is well the next time we encounter them to observe them more closely.
It was not that the aphideshad completed their growth and died or fled.
The Lace-wing Fly The Wolf in the Fold A Tempting Aphis Brood Where the Aphides Swarm Initial.
If therefore the honey dew is kept off by destroying the Aphides which secrete it, Sooty Mould will not appear.
The Aphidesbreathe through pores at the sides of their bodies.
And the Ichneumon and Chalcid Flies lay their eggs in the bodies of the Aphides and their maggots feed on them from within.
Some species keep Aphideson trees and bushes, others collect root-feeding Aphides into their nests.
Not only, moreover, do the Ants protect the Aphides themselves, but collect their eggs in autumn, and tend them carefully through the winter, ready for the next spring.
One tree lived a year before being killed; it was a most insidious sort of death, but the aphides left that tree.
I tried it on four trees affected with aphides and found that he told me the truth.
The ants may be observed stroking the aphides with their feelers, causing the aphides to excrete a sweet fluid on which the ant feeds.
If, however, the food-plant is grown in a conservatory where protection against cold is afforded, the aphides may go on reproducing agamogenetically without cessation for many years together.
Closely related to the typical aphides is Phylloxera vastatrix, the insect which causes enormous loss by attacking the leaves and roots of vines.
Apart from their importance from the economic standpoint, Aphides are chiefly remarkable for the phenomena connected with the propagation of the species.
After this interval, I felt sure that the aphides {211} would want to excrete.
But as the excretion is extremely viscid, it is probably a convenience to the aphides to have it removed; and therefore probably the aphides do not instinctively excrete for the sole good of the ants.
No successful mode of destroying them has yet been discovered, but the best remedy against them is to wash the infested shoots with tobacco water or soap lees; and to repeat the operation when any Aphides are seen.
Moreover they collect the eggs in the autumn and tend them through the winter (when they are of no use) with the same care as their own, so as to have a supply of youngAphides in the spring.
Ants are very fond of the honey-dew which is formed by the Aphides, and have been seen to tap the Aphides with their antennae, as if to induce them to emit some of the sweet secretion.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "aphides" in a variety of sentences. We hope that you will now be able to make sentences using this word.
