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Macrothelidae
Macrothelidae is a family of mygalomorph spiders, split off from the family Hexathelidae in 2018. It contains three genera, '' Macrothele,'' '' Vacrothele'' and the extinct '' Promacrothele.'' Genera *'' Macrothele'' Ausserer, 1871 Europe, Africa, Asia *'' Vacrothele'' Tang & Yang, 2022 China *'' Promacrothele'' Burmese amber Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. Th ..., Myanmar, mid Cretaceous. References Mygalomorphae Spider families {{Avicularioidea-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrothele
''Macrothele'' is a genus of mygalomorph spiders in the family Macrothelidae, and was first described by A. Ausserer in 1871. Most of the species in the genus occur in Asia, from India to Japan, and Java, with five found in Africa, and two in Europe. The name is derived from Ancient Greek μακρός ("makro-"), meaning "big", and θηλή ("thele"), referring to the spinnerets. Description Spiders of this genus are fairly large, with females of some Chinese species ranging from in body length. Males are smaller, sometimes only half that length. Macrothelids can be distinguished from other mygalomorph spiders by their larger posterior sigillae on the sternum, and the arrangement of the rows of teeth on the margin of the chelicerae: larger front-facing margin and smaller rear-facing. These spiders build tube-webs or funnel-webs under rocks or logs, or in crevices in the ground. Taxonomy The genus ''Macrothele'' was erected by Anton Ausserer in 1871, with the type spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexathelidae
Hexathelidae is a family of mygalomorph spiders. It is one of a number of families and genera of spiders known as tunnelweb or funnel-web spiders. In 2018, the family was substantially reduced in size by genera being moved to three separate families: Atracidae, Macrothelidae and Porrhothelidae. Description These spiders are medium to large in size, with body lengths ranging from . The body is typically three times longer than it is wide. They are darkly colored, ranging from black to brown, with a glossy carapace covering the front part of the body. Like the related diplurid spiders, the hexathelids have generally long spinnerets. Their moderately long posterior spinnerets and other features make the Hexathelidae appear similar to the Dipluridae, and were considered a subfamily of the latter until 1980. Like other Mygalomorphae (also called the Orthognatha, an infraorder of spiders which includes the true tarantulas), these spiders have fangs which point straight down ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Macrothele Gigas
The Giant Japanese funnel-web spider, known formally as ''Macrothele gigas'', is a species of funnel-web spider in the family Macrothelidae. It is one of the largest funnel-web spiders in the world, and is highly venomous. Description Members of the species are typically black with red fangs protruding from the mouth. When fully grown, spiders in the species can grow to have a leg span of ~, making them one of the largest funnel web spider species in the world. The spider is exclusive to the Ryukyu Islands in Japan. Venom The spider is venomous, and typical symptoms after a bite can include unnatural amounts of perspiration, goose bumps, hypertension and tachycardia. Sources Macrothelidae Spiders described in 1903 Endemic fauna of Japan Spiders of Asia Spiders described in 1998 {{Macrothelidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vacrothele
''Vacrothele'' is a genus of mygalomorph spiders in the family Macrothelidae. It was first described by Tang & Yang in 2022. Species , it contains 11 species, found in China, Taiwan, and Japan:{{cite web , title=Gen. Vacrothele Tang & Yang, 2022 *'' Vacrothele digitata'' (Chen, Jiang & Yang, 2020) – China *'' Vacrothele emei'' (Lin & Li, 2021) – China *'' Vacrothele fuyuanensis'' Zheng, Zhao & Yang, 2025 – China *'' Vacrothele hunanica'' (Zhu & Song, 2000) (type) – China *'' Vacrothele jiangkouensis'' Zheng, Zhao & Yang, 2025 – China *'' Vacrothele palpator'' ( Pocock, 1901) – China, Hong Kong Hong Kong)., Legally Hong Kong, China in international treaties and organizations. is a special administrative region of China. With 7.5 million residents in a territory, Hong Kong is the fourth most densely populated region in the wor ... *'' Vacrothele pseudohunanica'' Tang, Wu, Zhao & Yang, 2022 – China *'' Vacrothele taiwanensis'' (Shimojana & Haupt, 1998 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mygalomorphae
The Mygalomorphae, or mygalomorphs, are an infraorder of spiders, and comprise one of three major groups of living spiders with over 3,000 species, found on all continents except Antarctica. Many members are known as trapdoor spiders due to their creation of trapdoors over their burrows. Other prominent groups include Australian funnel web spiders and tarantulas, with the latter accounting for around one third of all mygalomorphs. Description This group of spiders comprises mostly heavy-bodied, stout-legged spiders including tarantulas, Australian funnel-web spiders, mouse spiders, and various families of spiders commonly called trapdoor spiders. Like the " primitive" suborder of spiders Mesothelae, they have two pairs of book lungs, and downward-pointing chelicerae. Because of this, the two groups were once believed to be closely related. Later it was realised that the common ancestors of all spiders had these features (a state known as symplesiomorphy). Following the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Family (biology)
Family (, : ) is one of the eight major hierarchical taxonomic ranks in Linnaean taxonomy. It is classified between order and genus. A family may be divided into subfamilies, which are intermediate ranks between the ranks of family and genus. The official family names are Latin in origin; however, popular names are often used: for example, walnut trees and hickory trees belong to the family Juglandaceae, but that family is commonly referred to as the "walnut family". The delineation of what constitutes a family—or whether a described family should be acknowledged—is established and decided upon by active taxonomists. There are not strict regulations for outlining or acknowledging a family, yet in the realm of plants, these classifications often rely on both the vegetative and reproductive characteristics of plant species. Taxonomists frequently hold varying perspectives on these descriptions, leading to a lack of widespread consensus within the scientific community ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider
Spiders (order (biology), order Araneae) are air-breathing arthropods that have eight limbs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude spider silk, silk. They are the largest order of arachnids and rank seventh in total species diversity among all Order (biology), orders of organisms. Spiders are found worldwide on every continent except Antarctica, and have become established in nearly every land habitat. , 53,034 spider species in 136 Family (biology), families have been recorded by Taxonomy (biology), taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomy, Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segmentation (biology), segments are fused into two Tagma (biology), tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmese Amber
Burmese amber, also known as Burmite or Kachin amber, is amber from the Hukawng Valley in northern Myanmar. The amber is dated to around 100 million years ago, during the latest Albian to earliest Cenomanian ages of the mid-Cretaceous period. The amber is of significant palaeontological interest due to the diversity of flora and fauna contained as inclusions, particularly arthropods including insects and arachnids but also birds, lizards, snakes, frogs and fragmentary dinosaur remains. The amber has been known and commercially exploited since the first century AD, and has been known to science since the mid-nineteenth century. Research on the deposit has attracted controversy due to the potential role of the amber trade in funding internal conflict in Myanmar and hazardous working conditions in the mines where it is collected. Geological context, depositional environment and age The amber is found in the Hukawng Basin, a large Cretaceous-Cenozoic sedimentary basin within north ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
