How to use Caterpillars in a sentence
We seem to be justified in assuming that there are many movements of stretching and posturing possible to caterpillars, and that some caterpillars had a congenital fortuitous tendency to one position, some to another, and, finally that among all the variety of habitual movements thus exhibited one has been selected and perpetuated because it coincided with the necessary conditions of safety, since it happened to give the caterpillar an increased resemblance to a twig.
The latter is the more serious, as in addition to the actual damage done by the beetle the holes afford entrance to fungus spores, &c. Under the name " horn worms " are included the larvae or caterpillars of species of Protoparce.
Seedling plants of tobacco, like many other crops, are liable to attack by " cut worms," the caterpillars of species of Peridromia and Agrotis.
The Tenthredinidae, or true saw-flies, are distinguished by two spines on each fore-shin, while the larvae are usually caterpillars, with three pairs of thoracic legs, and from six to eight pairs of abdominal prolegs, the latter not possessing the hooks found on the pro-legs of lepidopterous caterpillars.
The production of edible caterpillars, on which my talk will concentrate, forms part of this project.Advertisement
Cultivated caterpillars produce the fiber, and manufacturers use the silk in varying thicknesses for a variety of uses.
Butterflies begin their existence as caterpillars.
The caterpillars of the leopard moth (Zeuzera pyrina) and of the goat moth (Cossus ligniperda) sometimes bore their way into the trunks and destroy the sap channels.
The series of paired spiracles on most of the trunk-segments is well displayed, as a rule, in terrestrial larvae - caterpillars and the grubs of most beetles, for example.
Of this total no less than $40,000,000 (8,000,000) is credited to a small beetle, the cotton boll weevil, and to two caterpillars.Advertisement
Occasionally vast armies of locusts or caterpillars advance over large tracts of country, devouring all vegetation in their line of march.
Now it is clear that preceding generations of caterpillars cannot have acquired this habit of posturing by experience.
Other caterpillars, "budworms" (Heliothis, spp.), attack the buds or burrow into the seed-pods.
This is effected not so much by their numbers and their powers of con - sumption, as amongst caterpillars, but by their habits of attack - ing the essential parts of a plant, and causing by their injuries the death of the plant affected.
This enables it to kill the caterpillars of the cabbage white butterfly quickly.Advertisement
The ants return the favor by guarding the caterpillar against the many predatory insects which enjoy eating juicy young caterpillars.
Been cruise hawaii one way repaired for swimming killer caterpillars and seven-day roundtrip cruise.
Bug Gun for Gardens, 800ml Spray Multi-purpose insecticide which controls greenfly, blackfly, caterpillars, whitefly, aphids and thrips.
Other shrubs include wild honeysuckle, brambles and holly The animals that live here include spiders, caterpillars and butterflies.
Once in the final instar, I was able to use the caterpillars guide by Jim Porter to identify them.Advertisement
The main problem is fireblight, but caterpillars, aphids, gall midges, honey fungus, rust and powdery mildew may give problems.
The larvae or caterpillars have three pairs of thoracic (true) legs and several pairs of fleshy, abdominal prolegs.
Caterpillars on garlic mustard, however, often pupate on the stems of the plant on which they fed.
The tiny wasps are also a parasite to many kinds of caterpillars.
Observations upon captive specimens have led to the conclusion that it feeds principally on juices, especially of the sugar-cane, which it obtains by tearing open the hard woody circumference of the stalk with its strong incisor teeth; but it is said also to devour certain species of wood-boring caterpillars, which it obtains by first cutting down with its teeth upon their burrows, and then picking them out of their retreat with the claw of its attenuated middle finger.Advertisement
It is among the Invertebrata that epidemics of destruction are referred to, though we should bear in mind that it is only the difference in numerical proportion that prevents our speaking of an epidemic of elephants or of rabbits, though we use the term when speaking of blight insects; there is little consistency in the matter, as it is usual to speak of an invasion or scourge of locusts, caterpillars, &c. Insect injuries are very varied in degree and in kind.
Others, with soft, white, cylindrical bodies, which recall the caterpillars of moths, burrow in the leaves or stems of plants.
The Diptera Orthorrhapha include the more primitive and less specialized families such as the Tipulidae (daddy-long-legs), Culicidae (gnats or mosquitoes), Chironomidae (midges), Mycetophilidae (fungus-midges), Tabanidae (horse-flies), Asilidae (robber-flies), &c. The Diptera Cyclorrhapha on the other hand consist of the most highly specialized families, such as the Syrphidae (hover-flies), Oestridae (bot and warble flies), and Muscidae (sensu latiore - the house-fly and its allies, including tsetse-flies, flesh-flies, Tachininae, or flies the larvae of which are internal parasites of caterpillars, &c.).
The phytophagous species are attached to various parts of plants, dead or alive; and the carnivorous in like manner feed on dead or living flesh, or its products, many larvae being parasitic on living animals of various classes (in Australia the larva of a species of Muscidae is even a parasite of frogs), especially the caterpillars of Lepidoptera, which are destroyed in great numbers by Tachininae.
Among other notable Lepidopterous pests are the " surface larvae " or cutworms (Agrotis spp.), the caterpillars of various Noctuae; the codling moth (Carpocapsa pomonella), which causes the maggot in apples, has now become a universal pest, having spread from Europe to America and to most of the British Colonies.
The disease is peculiarly contagious and infectious, owing to the development of the fungus through the skin, whence spores are freed, which, coming in contact with healthy caterpillars, fasten on them and germinate inwards, giving off corpuscles within the body of the insect.
Those include mites, termites (or white ants), thread blight, grey blight, caterpillars (naked or in bags) and caterpillars armed with stinging hairs to protect them, and borers, red and black, some of which eat the core out of the wood, while others content themselves with eating only the bark.
The young are fed on invertebrates, particularly caterpillars, larvae and pupae of flies and beetles.
The final instar is normally collected (slide 14) before the caterpillars fall to the ground and pupate just below the soil surface.
The caterpillars burrow into soft dry sand to pupate in summer, emerging the following year.
If these insects select only full grown caterpillars, I can scarcely imagine one of the smaller individuals managing these unwieldy bodies.
Caterpillars have voracious appetites and have been known to consume entire plants almost overnight.
Try to identify caterpillars before killing them.
If physical removal isn't practical, a bacterial spray with Bacilus thuringiensis (Bt) will control caterpillars.
It is likely to be attacked by a variety of insects, including aphids, scale, borers, caterpillars, tent caterpillars, Japanese beetles, and spider mites.
The nasturtiums attract caterpillars, which will keep them away from your green leafy vegetables.
Some types of corn have been modified with a gene that kills caterpillars and other soft bodied pests.
Modified corn pollen killed not only the corn root worms that it was supposed to kill, it also killed thousands of Monarch butterfly caterpillars.
Bt is a naturally occurring soil organism that has the ability to excrete protein crystals that kill certain pest species, such as caterpillars.
For example, the old standby of egg-carton craft projects, from caterpillars to games of mancala, have entertained thousands of kids over the years.
First-School has some of the most useful varieties of flash cards, calendar games, number caterpillars, and activity worksheets.
Or make caterpillars, butterflies or all sorts of other insects using your thumb print.
These eggs are very minute - about one hundred weighing a grain; and a vast number of hatched worms may at first be kept in a small space; but the rapid growth and voracious appetite of the caterpillars demand quickly increasing and ample space.
The gizzard of various birds which are addicted to eating hairy caterpillars, e.g.
Cuculus canorus and trogons, is often lined with the broken-off hairs of these caterpillars, which, penetrating the cuticle, assume a regular spiral arrangement, due to the rotatory motion of the muscles of the gizzard.
Besides the aphids, other insects, such as scale insects (Coccidae), caterpillars of blue butterflies (Lycaenidae), and numerous beetles, furnish the ants with nutrient secretions.
The larvae of these are usually spoken of as " false caterpillars," on account of their resemblance to the larvae of a moth.
Some of these glands may be modified for special purposes - as silk-producing glands in caterpillars or as poisonglands in blood-sucking flies and bugs.
The pseudopods that exist on the abdomen of numerous caterpillars may possibly arise from the embryonic pseudopods, but this also is far from being established.
The caterpillars (" cut worms ") of various species of Agrotis and other moths occur in all parts of the world and attack young cotton.
Spiders, caterpillars and grasshoppers are, he said, stung in their chief nerve-centres, in consequence of which the victims are not killed outright, but rendered motionless and continue to live in this paralysed condition for several weeks, being thus available as food for the larvae when these are hatched.
Such cases are the habits of " shamming dead " and the combined posturing and colour peculiarities of certain caterpillars (Lepidopterous larvae) which cause them to resemble dead twigs or similar surrounding objects.
Moreover, young birds that had been taught by experience that these caterpillars are uneatable also left wasps untouched.
Another instance of mimicry affecting the larval form is supplied by the moth Endromis versicolor, the caterpillars of which resemble the inedible larvae of saw-flies.
Tobacco dust will dislodge most of the numerous kinds of slugs, caterpillars or worms that make their appearance on the young shoots of vines or trees.
The tiny caterpillars strip the flesh out of leaves causing brown blotches which become holes later.
Keep a look out for the giant caterpillars of the Hawk Moths.
The eggs hatch into green caterpillars with cream stripes, which look similar to the grass on which they feed.
The damage to butterfly caterpillars is not clear at present.
Leek moth - Mainly a pest of leek moth - Mainly a pest of leeks and onions, the caterpillars of leek moth feed within the leaves.
Between bouts of feeding the older caterpillars rest at the bottom of the plant, often hiding in leaf litter.
General attacks of leaf-diseases invariably lead to starvation and necrosis of twigs, and similarly with the ravages of caterpillars and other insects.