Arachnid - Wikipedia
Arachnids are arthropods in the class Arachnida (/ ə ˈ r æ k n ɪ d ə /) of the subphylum Chelicerata. Arachnida includes, among others, spiders, scorpions, ticks, mites, pseudoscorpions, harvestmen, camel spiders, whip spiders and vinegaroons. [1] Adult arachnids have eight legs attached to the cephalothorax.
蛛形纲 - 维基百科，自由的百科全书
蛛形綱 （學名： Arachnida），又名 蜘蛛綱，是 節肢動物門 下的 綱，包括 蠍子 、 蟎 、 蜱 、 擬蠍 等110,000多種 物種，其中51,000種為 蜘蛛 [3][4][5]。. 成年蛛形綱動物一般有八條連結著 頭胸部 的 腿，在某些物種，最前端雙腿的功能已演變為感官為主；在其他物 ...
蛛形纲 - 百度百科
蛛形纲（拉丁学名：Arachnida），是节肢动物门下的一个纲，全世界已知约5万多种，螯肢亚门最大的一纲。 包括蜘蛛、蝎、蜱、螨等。 现存种可分为2亚纲11目。
Arachnid | Definition, Facts, & Examples | Britannica
5 天之前 · Arachnid, any member of the arthropod group that includes spiders, daddy longlegs, scorpions, and mites and ticks, as well as lesser-known subgroups. Some arachnids transmit diseases to humans and plants. Learn more about the physical features, behavior, natural history, and evolution of arachnids.
蛛形纲 - 维基百科，自由的百科全书
2024年10月7日 · 蛛形纲（学名： Arachnida ），又名蜘蛛纲，是节肢动物门下的纲，包括蝎子、螨、蜱、拟蝎等110,000多种物种，其中51,000种为蜘蛛 [3] [4] [5] 。 成年蛛形纲动物一般有八条连结著 头胸部 的 腿 ，在某些物种，最前端双腿的功能已演变为感官为主；在其他物种， 附肢 ...
Class Arachnida | Department of Entomology
The Class arachnida is a large and diverse group. All arachnids belong to a subphylum (a division of Arthropoda) known as the Chelicerata, of which there are approximately 65,000 described species (~8,000 in North America). They are characterized by having two body regions, a cephalothorax and an abdomen.
Spider | Description, Behavior, Species, Classification, & Facts ...
2024年9月16日 · Spider, any of more than 46,700 species of arachnids that differ from insects in having eight legs rather than six and in having the body divided into two parts rather than three. All spiders are predators, feeding almost entirely on other arthropods, especially insects.
What Are Arachnids? - ThoughtCo
2019年10月4日 · The class Arachnida includes a diverse group of arthropods: spiders, scorpions, ticks, mites, harvestmen, and their cousins. Scientists describe more than 100,000 species of arachnids. In North America alone, there are about 8,000 arachnid species.
Arachnids: The Ultimate Guide – What Is An Arachnid? The …
2019年11月19日 · An arachnid is an invertebrate animal in the class Arachnida. Arachnida itself is part of a larger group of animals known as arthropods. Like all arthropods, arachnids have jointed legs, segmented bodies, and hard, external exoskeletons. …
Arachnida - New World Encyclopedia
An arachnid is any member of the arthropod class Arachnida, a largely terrestrial group that includes spiders, mites, ticks, scorpions, and harvestmen (daddy longlegs). Arachnida is one of the classes of the subphylum Chelicerata (including horseshoe crabs, sea scorpions, and sea spiders) of the phylum Arthropoda.