nah:Papalotl
Kamehameha
A butterfly is a flying insect of the order Lepidoptera (as are moths), usually with striking colours and patterns on its wings.
People who study or collect butterflies or moths are called lepidopterists.
Table of contents |
2 The four stages in the lifecycle of a butterfly 3 Species 4 Survival 5 Field guides to butterflies 6 Reference 7 External links 8 Other meanings |
Etymology
An erroneous etymology claims that the word butterfly came from a shift of letters in "flutterby"; however, the old English word was buttorfleoge and a similar word occurs in Dutch, apparently because butterflies were thought to steal milk.
Unlike most insects they do not have a nymph period, but have a pupal stage between the larva and the adult stage (the imago).
As Lepidoptera, butterflies have four wings, but unlike moths, the fore and hindwings are not hooked together, permitting a more graceful flight. A butterfly has six legs; the larva also has six true legs and a number of prolegs. After it emerges from its pupal stage it cannot fly for some time because its wings have not yet unfolded. A newly emerged butterfly needs to spend some time 'inflating' its wings with blood and letting them dry, during which time it is extremely vulnerable to predators.
Many species of butterfly are sexually dimorphic. Some butterflies, such as the Monarch butterfly, are migratory.
Butterflies are often confused with moths, but there are a few simple differences between them, including colour, habits, and pupating appearance. See the difference between a butterfly and a moth.
Butterflies live primarily on nectar from flowers. Some also derive nourishment from pollen, tree sap, rotting fruit, dung, and dissolved minerals in wet sand or dirt. Butterflies are also pollinators.
There are between 15,000 and 20,000 species of butterflies worldwide. Some species include:
Butterflies (and their stages) have many natural enemies such as:
Ants will sometimes attack a larva in hordes. However, there are actually some species of ants that keep myrmecophilous (ant loving) butterfly larvae as cattle, taking a larva into their nest, feeding it leaves on one end and milking it for honeydew on the other. This symbiotic relationship can turn to the larvae becoming myrmecophageous (ant-eating). The ants actually tolerate the larvae even while they eat the ant pupae.
Some butterflies have evolved 'eye' like markings on their wings, scaring off some birds. Also, since some birds attack the eyes of an animal first, the butterfly has a chance of escaping in the confusion when the bird simply pokes a hole in one of the wings.
The four stages in the lifecycle of a butterfly
Egg
Butterfly eggs consist of a hard-ridged outer layer of shell, called the chorion, lined with a thin coating of wax which prevents the egg from drying out before the larva has fully developed. Each egg has a number of tiny funnel-shaped openings at one end, called micropyles. The purpose of the holes is to allow sperm to enter and to fertilize the egg. Butterfly and moth eggs vary greatly in size between species, but they are all spherical or ovate.Larva
Larvae, or caterpillars, are multilegged eating machines. They live on plant leaves and spend practically all their time eating. As they grow they shed their skin several times.Pupa
When the larva has eaten enough it will will either spin a cocoon or form a chrysalis. The larva usually moves to the underside of a leaf. To form a cocoon it spins a silk-like thread around itself. A chrysalis is formed by hardening bodily secretions. A larva completely covered by a cocoon or chrysalis is called a pupa. Inside its protective shell the larva will transform into a butterfly (or moth).
Butterfly
Lange's MetalmarkSpecies
Survival
Common BuckeyeAnts
Birds
Field guides to butterflies
Reference
External links
See also metamorphosis (biology).
Other meanings