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Troglodiplura Challeni
''Troglodiplura challeni'' is a species of troglomorphic spider in the family Anamidae, found in Western Australia. It was first described in 2020 by Mark Harvey and Michael Rix Michael Rix (born 8 January 1981) is a former professional Australian rules footballer who played for the St Kilda Football Club in the Australian Football League (AFL). Originally rookie listed with Hawthorn for the 2004 season, Rix did not .... The species epithet honours Craig Challen, for his contributions to cave diving and his role in the Tham Luang cave rescue in 2018. The species is known only from Old Homestead Cave on the Nullarbor Plain from fragments of dead specimens. References Anamidae Spiders of Australia Spiders described in 2020 {{Mygalomorphae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mark Harvey (arachnologist)
Mark Stephen Harvey (born 17 September 1958) is a museum scientist and biologist. Since 1989 he has been based at the Western Australian Museum. Career Harvey graduated from Monash University in 1983 with a PhD titled "Contributions to the systematics of the pseudoscorpionida (arachnida) : the genus synsphyronus chamberlin (garypidae) and the family sternophoridae". His research interests include the systematics and evolution of arachnids and other terrestrial invertebrates. , he is a member and Vice-President of the International Commission on Zoological Nomenclature. Achievements, awards and recognition Harvey was presented with the 1991 Edgeworth David Medal by the Royal Society of New South Wales, and the Bonnet Award by the International Society of Arachnology The International Society of Arachnology (ISA) promotes the study of arachnids and the exchange of information among researchers in this field. It acts as an umbrella organisation for regional societies and i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Michael G
Michael may refer to: People * Michael (given name), a given name * Michael (surname), including a list of people with the surname Michael Given name "Michael" * Michael (archangel), ''first'' of God's archangels in the Jewish, Christian and Islamic religions * Michael (bishop elect), English 13th-century Bishop of Hereford elect * Michael (Khoroshy) (1885–1977), cleric of the Ukrainian Orthodox Church of Canada * Michael Donnellan (1915–1985), Irish-born London fashion designer, often referred to simply as "Michael" * Michael (footballer, born 1982), Brazilian footballer * Michael (footballer, born 1983), Brazilian footballer * Michael (footballer, born 1993), Brazilian footballer * Michael (footballer, born February 1996), Brazilian footballer * Michael (footballer, born March 1996), Brazilian footballer * Michael (footballer, born 1999), Brazilian footballer Rulers =Byzantine emperors= *Michael I Rangabe (d. 844), married the daughter of Emperor Nikephoros I * Mi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troglomorphism
Troglomorphism is the morphological adaptation of an animal to living in the constant darkness of caves, characterised by features such as loss of pigment, reduced eyesight or blindness, and frequently with attenuated bodies and/or appendages. The terms troglobitic, stygobitic, stygofauna, troglofauna, and hypogean or hypogeic, are often used for cave-dwelling organisms. A 2012 study by a team from the National University of Singapore found that reductive changes in freshwater cave crabs evolved at the same rate as constructive changes. This shows that both selection and evolution have a role in advancing reductive changes (e.g smaller eyes) and constructive changes (e.g larger claws), making troglomorphic adaptations subject to strong factors that affect an organism's morphology. Troglomorphism occurs in molluscs, velvet worms, arachnids, myriapods, crustaceans, insects, fish, amphibians (notably cave salamanders) and reptiles. To date no mammals or birds have been found to live ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spider
Spiders ( order Araneae) are air-breathing arthropods that have eight legs, chelicerae with fangs generally able to inject venom, and spinnerets that extrude silk. They are the largest order of arachnids and rank seventh in total species diversity among all orders of organisms. Spiders are found worldwide on every continent except for Antarctica, and have become established in nearly every land habitat. , 50,356 spider species in 132 families have been recorded by taxonomists. However, there has been debate among scientists about how families should be classified, with over 20 different classifications proposed since 1900. Anatomically, spiders (as with all arachnids) differ from other arthropods in that the usual body segments are fused into two tagmata, the cephalothorax or prosoma, and the opisthosoma, or abdomen, and joined by a small, cylindrical pedicel, however, as there is currently neither paleontological nor embryological evidence that spiders ever had ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anamidae
Anamidae is a family of Australian mygalomorph spiders. It was first described as a tribe by Simon in 1889, then raised to the subfamily Anaminae of the family Nemesiidae, before being raised to a family level by Opatova et al. in 2020. Taxonomy The tribe Anamini was first described by Eugène Simon in 1899. In 1982, Barbara York Main distinguished the tribe Teylini from the tribe Anamini by technical differences, including a narrow band of cuspules on the maxillae and the absence of a spine-bearing spur on the first tibia of males (except in ''Teyloides''). A molecular phylogenetic study in 2018 found that Anamini excluding Teylini was not monophyletic, and so merged the former Teylini into Anamini, placing the tribe in the subfamily Anaminae of the family Nemesiidae. In 2020, Opatova et al. raised the group to the rank of family, including all nine genera previously placed in the Anamini. Genera , the ''World Spider Catalog'' accepts the following genera. A 2018 molecular phy ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Western Australia
Western Australia (commonly abbreviated as WA) is a state of Australia occupying the western percent of the land area of Australia excluding external territories. It is bounded by the Indian Ocean to the north and west, the Southern Ocean to the south, the Northern Territory to the north-east, and South Australia to the south-east. Western Australia is Australia's largest state, with a total land area of . It is the second-largest country subdivision in the world, surpassed only by Russia's Sakha Republic. the state has 2.76 million inhabitants percent of the national total. The vast majority (92 percent) live in the south-west corner; 79 percent of the population lives in the Perth area, leaving the remainder of the state sparsely populated. The first Europeans to visit Western Australia belonged to the Dutch Dirk Hartog expedition, who visited the Western Australian coast in 1616. The first permanent European colony of Western Australia occurred following the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Craig Challen
Craig Challen, is an Australian technical diver and Cave diving, cave explorer. He was the recipient of the Oztek 2009 Diver of the Year award for his services to caving, and was joint winner of the 2019 Australian of the Year. He grew up in the Perth suburb of Thornlie, Western Australia, Thornlie and later on a farming property in Gidgegannup, Western Australia, Gidgegannup; he attended Eastern Hills Senior High School in Mount Helena, Western Australia, Mount Helena, near Gidgegannup. A veterinary surgeon by profession, Challen has made notable dives in Cocklebiddy Cave and Pearse Resurgence. In 2010 he made a record-setting dive while caving in New Zealand. In 2020 he made a second record-setting return visit to the Pearse Resurgence (New Zealand) and extended the Australasian depth record to with his dive partner Richard Harris (anaesthetist), Richard Harris. Career In 2018 Challen, along with his dive partner Richard Harris (anaesthetist), Richard Harris, was involve ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tham Luang Cave Rescue
In June and July 2018, a junior association football team and their assistant coach were rescued from the Tham Luang Nang Non cave in Chiang Rai Province in northern Thailand. Twelve members of the team, aged 11 to 16, and their 25-year-old assistant coach entered the cave on 23 June after a football practice session. Shortly thereafter, heavy rainfall partially flooded the cave system, blocking their way out, and trapping them deep within. Efforts to locate the group were hampered by rising water levels and strong currents; and no contact was made for more than a week. The cave rescue effort expanded into a massive operation amid intense worldwide public interest and involving international rescue teams. On 2 July, after advancing through narrow passages and muddy waters, British divers John Volanthen and Rick Stanton found the group alive on an elevated rock about from the cave mouth. Rescue organisers discussed various options for extracting the group, including whether to t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nullarbor Plain
The Nullarbor Plain ( ; Latin: feminine of , 'no', and , 'tree') is part of the area of flat, almost treeless, arid or semi-arid country of southern Australia, located on the Great Australian Bight coast with the Great Victoria Desert to its north. It is the world's largest single exposure of limestone bedrock, and occupies an area of about . At its widest point, it stretches about from east to west across the border between South Australia and Western Australia. History Historically, the Nullarbor was seasonally occupied by Indigenous Australian people, the Mirning clans and Yinyila people. Traditionally, the area was called ''Oondiri'', which is said to mean "the waterless". The first Europeans known to have sighted and mapped the Nullarbor coast were Captain François Thijssen and Councillor of the Indies, Pieter Nuyts, on the Dutch East Indiaman '''t Gulden Zeepaert'' (the Golden Seahorse). In 1626–1627, they charted a stretch of the southern Australian coast eas ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spiders Of Australia
Australia has a number of highly venomous spiders, including the Sydney funnel-web spider, its relatives in the family Hexathelidae, and the redback spider, whose bites can be extremely painful and have historically been linked with deaths in medical records. Most Australian spiders do not have venom that is considered to be dangerously toxic. No deaths caused by spider bites in Australia have been substantiated by a coronial inquest since 1979. There are sensationalised news reports regarding Australian spiders that fail to cite evidence. ''A Field Guide to Spiders of Australia'' published by CSIRO Publishing in 2017 featuring around 836 species illustrated with photographs of live animals, around 381 genera and 78 families, introduced significant updates to taxonomy from Ramirez, Wheeler and Dmitrov Estimates put the total number of Australian spider species at about 10,000. Only around 3,600 have been described. Little information is known about many undiscovered species. New s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
