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Mecistocephalus Lifuensis
''Mecistocephalus lifuensis'' is a species of soil centipede in the Mecistocephalidae family. This centipede is found in New Caledonia, a French overseas territory in Melanesia. This species is notable for featuring 51 pairs of legs rather than the 49 leg pairs usually observed in the genus '' Mecistocephalus''. Discovery and taxonomy This species was first described in 1898 by the British zoologist Reginald Innes Pocock. He based the original description of this species on type material found on Lifou Island in New Caledonia. In 1923, the French zoologist Henri Ribaut placed this species in the genus ''Lamnonyx'', which Pocock and others deemed to be a junior synonym for ''Mecistocephalus''. Authorities now agree that ''Mecistocephalus'' is the valid name for ''Lamnonyx''. Phylogeny A phylogenetic analysis of the family Mecistocephalidae based on morphology places ''M. lifuensis'' in a clade nested among ''Mecistocephalus'' species with 49 leg pairs in a phylogenetic tree. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reginald Innes Pocock
Reginald Innes Pocock, (4 March 1863 – 9 August 1947) was a British zoologist. Pocock was born in Clifton, Bristol, the fourth son of Rev. Nicholas Pocock and Edith Prichard. He began showing interest in natural history at St. Edward's School, Oxford. He received tutoring in zoology from Sir Edward Poulton, and was allowed to explore comparative anatomy at the Oxford Museum. He studied biology and geology at University College, Bristol, under Conwy Lloyd Morgan and William Johnson Sollas. In 1885, he became an assistant at the Natural History Museum, and worked in the section of entomology for a year. He was put in charge of the collections of Arachnida and Myriapoda. He was also given the task to arrange the British birds collections, in the course of which he developed a lasting interest in ornithology. The 200 papers he published in his 18 years at the museum soon brought him recognition as an authority on Arachnida and Myriapoda; he described between 300 a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology (from Ancient Greek μορφή (morphḗ) "form", and λόγος (lógos) "word, study, research") is the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, color, pattern, size), as well as the form and structure of internal parts like bones and organs, i.e., anatomy. This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of the overall structure of an organism or taxon and its component parts. History The etymology of the word "morphology" is from the Ancient Greek (), meaning "form", and (), meaning "word, study, research". While the concept of form in biology, opposed to function, dates back to Aristotle (see Aristotle's biology), the field of morphology was developed by Johann Wolfgang von Goethe (1790) and independently by the German anatomist and physiologist Karl Fried ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Koné, New Caledonia
Koné () is a commune in the North Province of New Caledonia, a special collectivity of France in the Pacific Ocean. Koné is the provincial seat of the North Province. Geography Climate Koné has a tropical savanna climate (Köppen climate classification The Köppen climate classification divides Earth climates into five main climate groups, with each group being divided based on patterns of seasonal precipitation and temperature. The five main groups are ''A'' (tropical), ''B'' (arid), ''C'' (te ... ''Aw''). The average annual temperature in Koné is . The average annual rainfall is with February as the wettest month. The temperatures are highest on average in February, at around , and lowest in July, at around . The highest temperature ever recorded in Koné was on 12 February 1954; the coldest temperature ever recorded was on 21 July 1997. Politics and regional development Koné is the seat of the government of the Northern Province, dominated since the Province wa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Administrative Divisions Of New Caledonia
Administration may refer to: Management of organizations * Management, the act of directing people towards accomplishing a goal: the process of dealing with or controlling things or people. ** Administrative assistant, traditionally known as a secretary, or also known as an administrative officer, administrative support specialist, or management assistant: a person whose work consists of supporting management ** Administration (government), management in or of government, the management of public affairs; government. *** Administrative division, a term for an administrative region within a country that is created for the purpose of managing of land and the affairs of people. ** Academic administration, a branch of an academic institution responsible for the maintenance and supervision of the institution ** Arts administration, a field that concerns business operations around an art organization ** Business administration, the performance or management of business operations *** ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oceania
Oceania ( , ) is a region, geographical region including Australasia, Melanesia, Micronesia, and Polynesia. Outside of the English-speaking world, Oceania is generally considered a continent, while Mainland Australia is regarded as its continental landmass. Spanning the Eastern Hemisphere, Eastern and Western Hemisphere, Western hemispheres, at the centre of the land and water hemispheres, water hemisphere, Oceania is estimated to have a land area of about and a population of around 46.3 million as of 2024. Oceania is the smallest continent in land area and the list of continents and continental subregions by population, second-least populated after Antarctica. Oceania has a diverse mix of economies from the developed country, highly developed and globally competitive market economy, financial markets of Australia, French Polynesia, Hawaii, New Caledonia, and New Zealand, which rank high in quality of life and Human Development Index, to the much least developed countries ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mecistocephalus Erythroceps
''Mecistocephalus erythroceps'' is a species of centipede in the Mecistocephalidae family. This centipede is notable for featuring 51 pairs of legs rather than the 49 leg pairs usually observed in the genus '' Mecistocephalus''. This species is found in Fiji. Discovery This species was originally described in 1920 by the American myriapodologist Ralph Vary Chamberlin. He based the original description of this species on specimens collected by the American zoologist William M. Mann in Fiji. Mann found these specimens at Levuka on the island of Ovalau and at Nadarivatu on the island of Viti Levu. The holotype and two paratypes are deposited at the Museum of Comparative Zoology at Harvard University. Description This species has 51 pairs of legs and can reach 31 mm in length. The body is a uniform pale yellow with a reddish head. The body is slender, with a uniform width for the anterior half but attenuated over the posterior half. The sternites feature a sharply defined ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxilla (arthropod Mouthpart)
In arthropods, the maxillae (singular maxilla) are paired structures present on the head as mouthparts in members of the clade Mandibulata, used for tasting and manipulating food. Embryologically, the maxillae are derived from the 4th and 5th segment of the head and the maxillary palps; segmented appendages extending from the base of the maxilla represent the former leg of those respective segments. In most cases, two pairs of maxillae are present and in different arthropod groups the two pairs of maxillae have been variously modified. In crustaceans, the first pair are called maxillulae (singular maxillula). Modified coxae at the base of the pedipalps in spiders are also called "maxillae", although they are not homologous with mandibulate maxillae. Myriapoda Millipedes In millipedes, the second maxillae have been lost, reducing the mouthparts to only the first maxillae which have fused together to form a gnathochilarium, acting as a lower lip to the buccal cavity and the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Telson
The telson () is the hindmost division of the body of an arthropod. Depending on the definition, the telson is either considered to be the final segment (biology), segment of the arthropod body, or an additional division that is not a true segment on account of not arising in the embryo from teloblast areas as other segments. It never carries any appendages, but a forked "tail" called the caudal furca may be present. The shape and composition of the telson differs between arthropod groups. Crustaceans In lobsters, Caridea, shrimp and other Decapoda, decapods, the telson, along with the uropods, forms the tail fan. This is used as a paddle in the caridoid escape reaction ("lobstering"), whereby an alarmed animal rapidly flexes its tail, causing it to dart backwards. Krill can reach speeds of over 60 cm per second by this means. The Induction period, trigger time to optical stimulus (physiology), stimulus is, in spite of the low temperatures, only 55 milliseconds. In th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ultimate Legs
Ultimate legs are a pair of modified rear legs unique to centipedes. Although they do not aid in locomotion, ultimate legs are used for a variety of uses, and their morphology varies accordingly. Sexual dimorphism is frequently present. Usage As a defence against predators In many species, ultimate legs are used in warning postures to scare off predators. The ultimate legs are raised, splayed, and sometimes waved back and forth. The presence of spines on the ultimate legs of some species also serves a defensive role- as species:John_G._E._Lewis, Lewis & species:Christian_Kronmüller, Kronmüller (2015) put it, "a predator approaching from behind would come into contact with a battery of spines." As a means of sound production Members of the genus ''Alipes (centipede), Alipes'', as well as some other centipedes, Stridulation, stridulate their leaf-like ultimate legs, possibly as a way to warn off predators, or as a distraction by encouraging the predator to focus on the l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Denticle (tooth Feature)
Denticles, also called serrations, are small bumps on a tooth that serve to give the tooth a serrated edge. In paleontology, denticle characteristics such as size and density (denticles per unit distance) are used to describe and classify fossilized teeth, especially those of dinosaurs. Denticles are also present on the teeth of varanoid lizards, sharks, and mammals. The term is also used to describe the analogous radular teeth of mollusks. Archived aPDF File:Dromaeosauridae tooth.TIF, Dromaeosauridae tooth with small denticles along the cutting edge. Scale bars are 1 mm. File:Ankylosaurus tooth.jpg, '' Ankylosaurus'' tooth with large denticles. File:Dentary teeth of Segnosaurus.png, ''Segnosaurus ''Segnosaurus'' is a genus of therizinosaurid dinosaur that lived in what is now southeastern Mongolia during the Late Cretaceous, about 102–86 million years ago. Multiple incomplete but well-preserved specimens were discovered in the Go ...'' dentition featuring a tri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tubercle
In anatomy, a tubercle (literally 'small tuber', Latin for 'lump') is any round nodule, small eminence, or warty outgrowth found on external or internal organs of a plant or an animal. In plants A tubercle is generally a wart-like projection, but it has slightly different meaning depending on which family of plants or animals it is used to refer to. In the case of certain orchids and cacti, it denotes a round nodule, small eminence, or warty outgrowth found on the lip. They are also known as podaria (singular ''podarium''). When referring to some members of the pea family, it is used to refer to the wart-like excrescences that are found on the roots. In fungi In mycology, a tubercle is used to refer to a mass of hyphae from which a mushroom is made. In animals When it is used in relation to certain dorid nudibranchs such as '' Peltodoris nobilis'', it means the nodules on the dorsum of the animal. The tubercles in nudibranchs can present themselves in different way ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forcipule
Forcipules are the modified, pincer-like, front legs of centipedes that are used to inject venom into prey. They are the only known examples of front legs acting as venom injectors. Nomenclature Forcipules go by a variety of names in both scientific and colloquial usages. They are sometimes known as poison claws or jaw legs, referencing their evolution from maxillipeds, a term which they are also sometimes known by in the context of centipedes (maxillipeds, maxillipedes). Other names include prehensors, telopodites, and forcipulae (singular forcipula). In the specific case in which the forcipules are used to inject venom, they are called toxicognaths (from ''toxic'' + the Greek '' gnathos'', jaw). The term forcipule references their similarity with forceps. Anatomy, systematics, and variation Forcipules evolved from the maxillipeds – front legs – of centipedes' last common ancestor, believed to be somewhat Scutigeromorph-like. They were initially leg-like, then pro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
