|
Gea Eff
''Gea eff'' is a species of orb-weaver spider. It is found in Papua New Guinea. The arachnologist Herbert Walter Levi formally described the species in 1983. While it was still undescribed, Michael H. Robinson and colleagues reported on its courtship and mating behaviors. ''Gea eff'' has the shortest scientific name of any spider species. Taxonomic history According to Herbert Walter Levi, specimens which Władysław Kulczyński illustrated and tentatively identified as '' Gea subarmata'' in the 1910s were in fact ''G. eff''. Publications by Michael H. Robinson and colleagues in the 1970s and 1980s referred to specimens they found in Wau, Papua New Guinea as belonging to an undescribed taxon. They had enlisted the Capuchin friar Chrysanthus to identify spider specimens and he realized this constituted a new species; he died in 1972 before able to further study it, but thought it belonged to the genus '' Argiope''. Robinson and colleagues referred to it as "Species 'F ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Herbert Walter Levi
Herbert Walter Levi (January 3, 1921 – November 3, 2014) was professor emeritus of zoology and curator of arachnology at the Museum of Comparative Zoology, Harvard University. He was born in Germany, educated there and at Leighton Park School, Reading in England. He then received his higher education at the University of Connecticut and the University of Wisconsin. Levi authored about 150 scientific papers on spiders and on biological conservation. He is the author of the popular Golden Guide ''Spiders and their Kin'', with Lorna Rose Levi (his wife) and Herbert Spencer Zim. Levi received the 2007 Eugene Simon Award from the International Society of Arachnology "for his immense influence on US spider research". He was an elected honorary member of the American Arachnological Society. Levi was an editorial board member for the ''Journal of Arachnology''. The pseudoscorpion genus ''Levichelifer'', the spider species ''Anisaedus levii'' and the whip spider species ''Phrynus levii''D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paratypes
In zoology and botany, a paratype is a specimen of an organism that helps define what the scientific name of a species and other taxon actually represents, but it is not the holotype (and in botany is also neither an isotype nor a syntype). Often there is more than one paratype. Paratypes are usually held in museum research collections. The exact meaning of the term ''paratype'' when it is used in zoology is not the same as the meaning when it is used in botany. In both cases however, this term is used in conjunction with ''holotype''. Zoology In zoological nomenclature, a paratype is officially defined as "Each specimen of a type series other than the holotype.", ''International Code of Zoological Nomenclature'' In turn, this definition relies on the definition of a "type series". A type series is the material (specimens of organisms) that was cited in the original publication of the new species or subspecies, and was not excluded from being type material by the author (th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sternum (arthropod Anatomy)
The sternum (pl. "sterna") is the ventral portion of a segment of an arthropod thorax or abdomen. In insects, the sterna are usually single, large sclerites, and external. However, they can sometimes be divided in two or more, in which case the subunits are called sternites, and may also be modified on the terminal abdominal segments so as to form part of the functional genitalia, in which case they are frequently reduced in size and development, and may become internalized and/or membranous. For a detailed explanation of the terminology, see Kinorhynchs have tergal and sternal plates too, though seemingly not homologous with those of arthropods.Sørensen, M. V. et al. Phylogeny of Kinorhyncha based on morphology and two molecular loci. PLoS One 10, 1–33 (2015). Ventrites are externally visible sternites. Usually the first sternite is covered up, so that vertrite numbers do not correspond to sternid numbers. The term is also used in other arthropod groups such as crustaceans ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carapace
A carapace is a Dorsum (biology), dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the underside is called the plastron. Crustaceans In crustaceans, the carapace functions as a protective cover over the cephalothorax (i.e., the fused head and thorax, as distinct from the abdomen behind). Where it projects forward beyond the eyes, this projection is called a rostrum (anatomy), rostrum. The carapace is Calcification, calcified to varying degrees in different crustaceans. Zooplankton within the phylum Crustacea also have a carapace. These include Cladocera, ostracods, and Isopoda, isopods, but isopods only have a developed "cephalic shield" carapace covering the head. Arachnids In arachnids, the carapace is formed by the fusion of prosomal tergites into a single Plate (animal anatomy), plate which carries the e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexually Dimorphic
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerated d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Britain
New Britain ( tpi, Niu Briten) is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi the Dampier and Vitiaz Straits) and from New Ireland by St. George's Channel. The main towns of New Britain are Rabaul/Kokopo and Kimbe. The island is roughly the size of Taiwan. While the island was part of German New Guinea, it was named Neupommern ("New Pomerania"). In common with most of the Bismarcks it was largely formed by volcanic processes, and has active volcanoes including Ulawun (highest volcano nationally), Langila, the Garbuna Group, the Sulu Range, and the volcanoes Tavurvur and Vulcan of the Rabaul caldera. A major eruption of Tavurvur in 1994 destroyed the East New Britain provincial capital of Rabaul. Most of the town still lies under metres of ash, and the capital has been moved to nearby Kokopo. Geography New Britain e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Louisiade Archipelago
The Louisiade Archipelago is a string of ten larger volcanic islands frequently fringed by coral reefs, and 90 smaller coral islands in Papua New Guinea. It is located 200 km southeast of New Guinea, stretching over more than and spread over an ocean area of between the Solomon Sea to the north and the Coral Sea to the south. The aggregate land area of the islands is about , with Vanatinai (Tagula) being the largest. Rogeia, Samarai and Sariba lie closest to New Guinea, while Misima, Vanatinai, and Rossel islands lie further east. History The islands were discovered by a Spanish expedition led by Luis Váez de Torres in 1606, that was part of the Fernandez de Quiros fleet which had sailed from South America in search of Australia. The Torres expedition visited various islands including Basilaki Island, which he named ''San Buenaventura'' in July 1606. It is possible that Malay and Chinese sailors also visited the islands earlier. More than a century later, in 17 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tagula Island
Vanatinai Island (also called Tagula and Sudest, for the names of the extreme capes of the island) is a volcanic island in the south-east of the Louisiade Archipelago within Milne Bay Province of Papua New Guinea. The reef-fringed island is approximately south-east of New Guinea and south of Misima. With an area of , it is the largest island of the archipelago. Tagula town, the main settlement, is located on the north-west coast. The population was 3628 . The principal export is copra. Geography The island is long, stretching from Cape Tagula to Cape Sudest, and up to wide. A wooded mountain range runs through the length of the island, with the summit, Mount Riu () near the center. The most important peaks of the range are, from west to east: *Mount Madau () *Mount Gangulua () *Mount Riu (formerly called Mount Rattlesnake) () *Mount Imau () *Mount Arumbi () Climate Most of Tagula island has a tropical rainforest climate (Af) but the main settlement of Tagula, locate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Guinea
New Guinea (; Hiri Motu Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea). It is a simplified version of Motu, from the Austronesian l ...: ''Niu Gini''; id, Papua, or , historically ) is the List of islands by area, world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Mainland Australia, Australia by the wide Torres Strait, though both landmasses lie on the same continental shelf. Numerous smaller islands are located to the west and east. The eastern half of the island is the major land mass of the independent state of Papua New Guinea. The western half, known as Western New Guinea, forms a part of Indonesia and is organized as the provinces of Papua (province), Papua, Central Papua, Highland Papua, South Papua, Southwest Papua, and West Papua (province), West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Central Province (Papua New Guinea)
Central Province is a province in Papua New Guinea located on the southern coast of the country. It has a population of 237,016 (2010 census) people and is in size. The seat of government of Central Province, which is located within the National Capital District outside the province, is the Port Moresby suburb of Konedobu. On 9 October 2007, the Central Province government announced plans to build a new provincial capital city at Bautama, which lies within Central Province near Port Moresby, although there has been little progress in constructing it. Whereas Tok Pisin is the main lingua franca in all Papua New Guinean towns, in part of the southern mainland coastal area centred on Central Province, Hiri Motu is a stronger lingua franca (but not in Port Moresby). Districts and LLGs Each province in Papua New Guinea has one or more districts, and each district has one or more Local Level Government (LLG) areas. For census purposes, the LLG areas are subdivided into wards and those ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madang Province
Madang is a province of Papua New Guinea. The province is on the northern coast of mainland Papua New Guinea and has many of the country's highest peaks, active volcanoes and its biggest mix of languages. The capital is the town of Madang. Districts and LLGs Each province in Papua New Guinea has one or more districts, and each district has one or more Local Level Government (LLG) areas. For census purposes, the LLG areas are subdivided into wards and those into census units. Education Tertiary educational institutions in Madang Province include: *Madang Technical College *Madang Marine Time College *Madang Teachers College *Divine Word University (DWU) is a national university and a leading tertiary institution in Papua New Guinea. Formerly Divine Word Institute, it was established by an Act of Parliament in 1980 and was established as a University in 1996. DWU It is ecumenical, coeducational and privately governed with government support. Provincial leaders The provin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transect
A transect is a path along which one counts and records occurrences of the objects of study (e.g. plants). There are several types of transect. Some are more effective than others. It requires an observer to move along a fixed path and to count occurrences along the path and, at the same time (in some procedures), obtain the distance of the object from the path. This results in an estimate of the area covered and an estimate of the way in which detectability increases from probability 0 (far from the path) towards 1 (near the path). Using the raw count and this probability function, one can arrive at an estimate of the actual density of objects. The estimation of the abundance of populations (such as terrestrial mammal species) can be achieved using a number of different types of transect methods, such as strip transects, line transects, belt transects, point transects and curved line transect In mathematics, a curve (also called a curved line in older texts) is an objec ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
.jpg "Click for more on -> Transect"){kind=spacer}