Insects are a major group of arthropods and the most diverse group of animals on the Earth， with over a million described species more than half of all known living organisms with estimates of undescribed species as high as 30 million， thus potentially representing over 90% of the differing life forms on the Insects may be found in nearly all environments on the planet， although only a small number of species occur in the oceans， a habitat dominated by another arthropod group， the There are approximately 2，000 praying mantis， 5，000 dragonfly species， 20，000 grasshopper， 82，000 true bug， 120，000 fly， 110，000 bee， wasp and ant， 170，000 butterfly and moth， and 360，000 beetle species described to Estimates of the total number of current species， including those not yet known to science， range from two million to fifty million， with newer studies favouring a lower figure of about six to ten Adult modern insects range in size from a 139mm (00547 in) fairyfly (Dicopomorpha echmepterygis) to a 7centimetres (3in) long stick insect (phobaeticus chani) The heaviest documented insect was a Giant Weta of 70 g (5 oz)， but other possible candidates include the Goliath beetles Goliathus goliatus， Goliathus regius and Cerambycid beetles such as Titanus giganteus， though no one is certain which is truly the The study of insects (from Latin insectus， meaning "cut into sections") is called entomology， from the Greek， also meaning "cut into sections"
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Butterfly， commonly known as Butterfly， the whole world there are about 14，000 species， most of which lies in the Americas， particularly in the Amazon most varieties in the world in addition to other regions outside the polar cold zone， are distributed in Asia， Taiwan is also well-known to a wide variety of General colorful butterflies， the wings and body there are various piebald head rod or a pair of hammer-like The largest butterfly wings up to 24 centimeters， and the youngest is only 6 Large Butterfly very interesting， special someone to collect all kinds of butterfly specimens in the Americas butterfly movement and Bird Watching， become an activity that attracted many There are many types of butterflies， fruits， agriculture and the main 原文： 蝶，通称为“蝴蝶”，全世界大约有14000余种，大部分分布在美洲，尤其在亚马逊河流域品种最多，在世界橙尖粉蝶(Anthocharis cardamines)其他地区除了南北极寒冷地带以外，都有分布，在亚洲，台湾也以蝴蝶品种繁多著名。蝴蝶一般色彩鲜艳，翅膀和身体有各种花斑，头部有一对棒状或锤状触角。最大的蝴蝶展翅可达24厘米，最小的只有6厘米。大型蝴蝶非常引人注意，专门有人收集各种蝴蝶标本，在美洲“观蝶”迁徙和“观鸟”一样，成为一种活动，吸引许多人参加。有许多种类的蝴蝶是农业和果木的主要害虫
