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Paracharon
''Paracharon'' is a genus of tailless whip scorpion. A single species, ''Paracharon caecus'' has been described. It is endemic to Guinea-Bissau in West Africa. It is one of two living genera of the family Paracharontidae, alongside the South American '' Jorottui''. It is a troglobite A troglobite (or, formally, troglobiont) is an animal species, or population of a species, strictly bound to underground habitats, such as caves. These are separate from species that mainly live in above-ground habitats but are also able to live u ... having no eyes, with ''P. caecus'' found living in termite nests. References Amblypygi Monotypic arachnid genera Scorpions of Africa Animals described in 1921 {{Arachnid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paracharontidae
Paracharontidae is an arachnid family within the order Amblypygi (tailless whip scorpions). Paracharontidae and the extinct Weygoldtinidae from the Carboniferous form the suborder Paleoamblypygi, the sister group to the remaining Amblypygi. The family contains two genera: '' Paracharon'', containing the single species ''Paracharon caecus'' Hansen, 1921 from Guinea-Bissau in West Africa, and '' Jorottui'' with the single species ''Jorottui ipuanai'' from Colombia in northern South America. '' Paracharonopsis'' from the Eocene (Ypresian In the geologic timescale the Ypresian is the oldest age (geology), age or lowest stage (stratigraphy), stratigraphic stage of the Eocene. It spans the time between , is preceded by the Thanetian Age (part of the Paleocene) and is followed by th ...) aged Cambay amber of India was initially assigned to this family but this was later questioned and it has since been reassigned to Euamblypygi. Both living species are troglobites, having no eyes, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tailless Whip Scorpion
Amblypygi is an order of arachnids also known as whip-spiders or tailless whip-scorpions, not to be confused with whip-scorpions or vinegaroons that belong to the related order Thelyphonida. The name "amblypygid" means "blunt tail", a reference to a lack of the flagellum that is otherwise seen in whip-scorpions. Amblypygids possess no silk glands or venom. They rarely bite if threatened but can grab fingers with their pedipalps, resulting in thorn-like puncture-injuries. As of 2023, five families, 17 genera, and around 260 species had been discovered and described. They are found in tropical and subtropical regions worldwide, mainly in warm and humid environments. They like to stay protected and hidden within leaf litter, caves, or underneath bark. Some species are subterranean; all are nocturnal. Fossilized amblypygids have been found dating back to the Carboniferous period, such as ''Weygoldtina''. Description Body-plan Being arachnids, Amblypygi possess two body-segments; ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amblypygi
Amblypygi is an order of arachnids also known as whip-spiders or tailless whip-scorpions, not to be confused with whip-scorpions or vinegaroons that belong to the related order Thelyphonida. The name "amblypygid" means "blunt tail", a reference to a lack of the flagellum that is otherwise seen in whip-scorpions. Amblypygids possess no silk glands or venom. They rarely bite if threatened but can grab fingers with their pedipalps, resulting in thorn-like puncture-injuries. As of 2023, five families, 17 genera, and around 260 species had been discovered and described. They are found in tropical and subtropical regions worldwide, mainly in warm and humid environments. They like to stay protected and hidden within leaf litter, caves, or underneath bark. Some species are subterranean; all are nocturnal. Fossilized amblypygids have been found dating back to the Carboniferous period, such as '' Weygoldtina''. Description Body-plan Being arachnids, Amblypygi possess two body-segm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jorottui
''Jorottui'' is a genus of amblypygid containing a single species, ''Jorottui ipuanai''. It is endemic to Colombia, being first collected from caves in the Upper Camarones river basin. It is one of two genera within the family Paracharontidae, the other being '' Paracharon'' from Guinea-Bissau in West Africa. ''J. ipuanai'' is troglobitic, living only in caves and lacking eyes. Like ''Paracharon'', the pedipalp Pedipalps (commonly shortened to palps or palpi) are the secondary pair of forward appendages among Chelicerata, chelicerates – a group of arthropods including spiders, scorpions, horseshoe crabs, and sea spiders. The pedipalps are lateral to ...s of ''Jorottui'' fold vertically upwards, rather than horizontally in front of the body. It was described in 2023. References Taxa described in 2023 Amblypygi Arachnids of South America Monotypic arachnid genera {{Arachnid-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Guinea-Bissau
Guinea-Bissau, officially the Republic of Guinea-Bissau, is a country in West Africa that covers with an estimated population of 2,026,778. It borders Senegal to Guinea-Bissau–Senegal border, its north and Guinea to Guinea–Guinea-Bissau border, its southeast. Guinea-Bissau was once part of the kingdom of Kaabu, as well as part of the Mali Empire. Parts of this kingdom persisted until the 18th century, while a few others had been under some rule by the Portuguese Empire since the 16th century. In the 19th century, it was colonised as Portuguese Guinea. Portuguese control was restricted and weak until the early 20th century, when its pacification campaigns solidified Portuguese sovereignty in the area. The final Portuguese victory over the last remaining bastion of mainland resistance came in 1915, with the conquest of the Papel people, Papel-ruled Kingdom of Bissau by the Portuguese military officer João Teixeira Pinto, Teixeira Pinto and the Wolof people, Wolof mercenary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Troglobites
A troglobite (or, formally, troglobiont) is an animal species, or population of a species, strictly bound to underground habitats, such as caves. These are separate from species that mainly live in above-ground habitats but are also able to live underground (eutroglophiles), and species that are only cave visitors (subtroglophiles and trogloxenes). Land-dwelling troglobites may be referred to as troglofauna, while aquatic species may be called stygofauna, although for these animals the term ''stygobite'' is preferable. Troglobites typically have evolutionary adaptations to cave life. Examples of such adaptations include slow metabolism, reduced energy consumption, better food usage efficiency, decrease or loss of eyesight (anophthalmia), and depigmentation (absence of pigment in the integument). Conversely, as opposed to lost or reduced functions, many species have evolved elongated antenna and locomotory appendages, in order to better move around and respond to environmental st ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Arachnid Genera
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical system. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scorpions Of Africa
Scorpions are predatory arachnids of the order Scorpiones. They have eight legs and are easily recognized by a pair of grasping pincers and a narrow, segmented tail, often carried in a characteristic forward curve over the back and always ending with a stinger. The evolutionary history of scorpions goes back 435 million years. They mainly live in deserts but have adapted to a wide range of environmental conditions, and can be found on all continents except Antarctica. There are over 2,500 described species, with 22 extant (living) families recognized to date. Their taxonomy is being revised to account for 21st-century genomic studies. Scorpions primarily prey on insects and other invertebrates, but some species hunt vertebrates. They use their pincers to restrain and kill prey, or to prevent their own predation. The venomous sting is used for offense and defense. During courtship, the male and female grasp each other's pincers and dance while he tries to move her onto his sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
