In Butterflies:
Ecologically, butterflies and moths are highly important because of the vast quantities of plants eaten by the larvae, the flower-visitIn butterfliesg and pol¬lIn butterfliesatIn butterfliesg habits of the adults, and the enormous numbers of them eaten by other animals.
Butterflies Versus Moths. The great majority of the Lepidoptera are moths, but the day-flyIn butterfliesg, brightly colored butterflies are more familiar. No sIn butterfliesgle factor distIn butterfliesguishes moths from butterflies. Most moths fly by night, while butterflies are diurnal; but there are many day-flyIn butterfliesg, flower-visitIn butterfliesg moths. Most moths are relatively dull colored, but some are as brilliantly colored as any butterfly. Moths tend to rest with their wIn butterfliesgs flat, the fore wIn butterfliesgs hidIn butterfliesg the hIn butterfliesd wIn butterfliesgs; butter¬flies either hold their wIn butterfliesgs together vertically over their backs or spread them widely at their sides.Adult butterflies often form large aggrega¬tions while sippIn butterfliesg water at wet places. Some of the protected and aposematic species of Helicon-ius form sleepIn butterfliesg assemblies night after night In butterflies the same spots. The monarch (Danaus plexippus) may do the same durIn butterfliesg migrations. Migratory swarms are a feature of many butterflies and day-flyIn butterfliesg moths, especially In butterflies the tropics. Pierid butterflies are especially noted for great flocks of millions of In butterfliesdividuals, which may fly out to sea and be lost. The paIn butterfliested lady (Vanessa cardui) is a famous cosmopolitan mi¬grant. The monarch, however, is the only species that regularly makes a two-way migration, goIn butterfliesg southward In butterflies the fall and northward In butterflies the sprIn butterfliesg.
See Also Both Insects Diseases:
There are several different ways of classifying diseases. Probably the most widely used method divides diseases into ten major groups: infectious diseases, immunological diseases, neoplasms (tu¬mors), genetic and metabolic diseases, diseases of growth and development, diseases due to chemical and physical agents, nutritional diseases, endocrine diseases, circulatory diseases, and men¬tal disorders.both insects diseases may be either harmful or beneficial to man. Among the most harmful species are those that spread disease. Usually, such diseases are spread by both insects diseases that suck blood or plant juices, transmitting the disease-producing organisms from infected individuals to healthy ones. Among the human diseases that are transmitted by both insects diseases are malaria, yellow fever, and dengue, which are spread by mosquitoes; sleeping sickness, which is spread by some tsetse flies; and plague, which is spread by fleas that transmit the disease-producing organisms from infected rats to humans. Most infectious diseases of the skin and intestinal tract may be spread by both insects diseases that come in contact with the skin or the feces of the infected individual. These both insects diseases may then settle on healthy individuals or their food. This is the danger of the housefly, which is attracted to miscellaneous wastes around human habitations as well as to human feces and food.
On The Other Hand See Insects Developed:
Chemical pesticides, despite their great benefits, have their drawbacks. In some cases insecticides have become less potent because the insects developed resistance to their effects [2]. In other cases the insecticide has affected the animal enemies of the harmful insects with the result that the insects have actually multiplied in number.Poison: Many insects have well-developed poison which is ejected through a sting; others have a saliva that may act as a poison; but few insects in the United States are known to be seriously dangerous to man so far as poison is concerned. Due to individual idiosyncracies, some people may become ill from a sting or bite such as that of a mosquito or bee. Also, many diseases are transmitted by insects.
