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Ozopore
An ozopore is the opening of a defensive gland present in some arthropods, notably in millipedes of the order PolydesmidaOzopore. External Anatomy of Polydesmida. polydesmida.info and in , the eight-legged arachnids also known as "daddy long-legs". The glands themselves are known as ozadenes, also called "scent glands", "repugnatorial glands", "odoriferous glands" or "stink glands" by various authors. The name is derived from ''ozo'' "smell" and ''porus'' "pore, sma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Harvestman
The Opiliones (formerly Phalangida) are an order of arachnids colloquially known as harvestmen, harvesters, harvest spiders, or daddy longlegs. , over 6,650 species of harvestmen have been discovered worldwide, although the total number of extant species may exceed 10,000. The order Opiliones includes five suborders: Cyphophthalmi, Eupnoi, Dyspnoi, Laniatores, and Tetrophthalmi, which were named in 2014. Representatives of each extant suborder can be found on all continents except Antarctica. Well-preserved fossils have been found in the 400-million-year-old Rhynie cherts of Scotland, and 305-million-year-old rocks in France. These fossils look surprisingly modern, indicating that their basic body shape developed very early on, and, at least in some taxa, has changed little since that time. Their phylogenetic position within the Arachnida is disputed; their closest relatives may be the mites (Acari) or the Novogenuata (the Scorpiones, Pseudoscorpiones, and Solifugae). Althou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cyphophthalmi
Cyphophthalmi is a suborder of harvestmen, colloquially known as mite harvestmen. Cyphophthalmi comprises 36 genera, and more than two hundred described species. The six families are currently grouped into three infraorders: the Boreophthalmi, Scopulophthalmi, and Sternophthalmi. Description Cyphophthalmi are smaller than the more familiar "daddy long-legs" harvestmen, with adults ranging from 1 to 7 mm in length. Moreover, their legs are relatively short compared to most other harvestmen, typically shorter than the body. Some superficially resemble mites, which is where they get their common name. Their coloration is almost always some shade of brown, with a heavily sclerotized body, and they are quite inconspicuous, residing in leaf litter or in caves. Many Cyphophthalmi are eyeless, and presumably rely on olfactory cues to find food and mates. Very little is known about their behavior, though they likely subsist mostly by scavenging and preying on minute arthropods. They ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Millipede
Millipedes are a group of arthropods that are characterised by having two pairs of jointed legs on most body segments; they are known scientifically as the class Diplopoda, the name derived from this feature. Each double-legged segment is a result of two single segments fused together. Most millipedes have very elongated cylindrical or flattened bodies with more than 20 segments, while pill millipedes are shorter and can roll into a tight ball. Although the name "millipede" derives from the Latin for "thousand feet", no species was known to have 1,000 or more until the discovery of ''Eumillipes persephone'', which can have over 1,300 legs. There are approximately 12,000 named species classified into 16 orders and around 140 families, making Diplopoda the largest class of myriapods, an arthropod group which also includes centipedes and other multi-legged creatures. Most millipedes are slow-moving detritivores, eating decaying leaves and other dead plant matter. Some eat fungi or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Glomerida
Glomerida is an order of pill-millipedes found primarily in the Northern Hemisphere. They superficially resemble pill-bugs or woodlice, and can enroll into a protective ball. They have twelve body segments, 17 to 19 pairs of legs, and males have enlarged rear legs involved in mating. The order includes about 30 genera and at least 280 species, including ''Glomeris marginata'', the common European pill-millipede. The order contains members in Europe, South-east Asia and the Americas from California to Guatemala. Although historically considered closely related with the similar sphaerotheriidans that also enroll, some DNA evidence suggest they may be more closely related to glomeridesmidans, a poorly known order that does not enroll. Description Glomeridans are small, oval-shaped millipedes reaching up to long. Like the Sphaerotheriida (so-called Giant Pill-millipedes), they are capable of enrolling into a ball ("volvation"), a trait also shared with the unrelated pillbugs (Oni ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ozophore
An ozophore is an elevated cone present in the harvestman ("daddy long-legs") suborder Cyphophthalmi. It carries the openings, called ozopores, of the defensive glandsPinto-da-Rocha ''et al.'' 2007: 22f that are present in many harvestmen. The name is derived from Ancient Greek Ancient Greek includes the forms of the Greek language used in ancient Greece and the ancient world from around 1500 BC to 300 BC. It is often roughly divided into the following periods: Mycenaean Greek (), Dark Ages (), the Archaic peri ... ''ozo'' "smell" and ''phorein'' "to bear". Footnotes References * (eds.) (2007): Harvestmen - The Biology of Opiliones. ''Harvard University Press'' Harvestmen Arachnid anatomy {{Opiliones-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sclerosomatidae
The Sclerosomatidae are a family of harvestmen with about 1,300 known species. Name The name is combined from Ancient Greek ''skleros'' "hard" and ''soma'' "body". (2007): Sclerosomatidae. Simon, 1879. In: Pinto-da-Rocha ''et al.'' 2007: 127ff Genera * Gagrellinae Thorell, 1889 :* ''Abaetetuba'' Tourinho-Davis, 2004 (5 species) :* '' Adungrella'' Roewer, 1955 (3 species) :* '' Akalpia'' Roewer, 1915 (2 species; India and Japan) :* '' Altobunus'' Roewer, 1910 (3 species; Celebes and Philippines) :* '' Amazonesia'' Soares, 1970 (2 species) :* '' Antigrella'' Roewer, 1954 (1 species) :* '' Aurivilliola'' Roewer, 1910 (17 species; South and Southeast Asia) :* '' Azucarella'' Roewer, 1959 (1 species) :* '' Bakerinulus'' Roewer, 1955 (1 species) :* '' Bastia'' Roewer, 1910 (3 species; South and Southeast Asia) :* '' Bastioides'' Mello-Leitão, 1931 (1 species; South America) :* '' Baturitia'' Roewer, 1931 (1 species; Sunda Islands) :* '' Biceropsis'' Roewer, 1935 (1 species; Burma) : ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Open Chain Compound
In chemistry, an open-chain compound (also spelled as open chain compound) or acyclic compound (Greek prefix "α", ''without'' and "κύκλος", ''cycle'') is a compound with a linear structure, rather than a cyclic one. An open-chain compound having no side chains is called a straight-chain compound (also spelled as straight chain compound). Many of the simple molecules of organic chemistry, such as the alkanes and alkenes, have both linear and ring isomers, that is, both acyclic and cyclic, with the latter often classified as aromatic. For those with 4 or more carbons, the linear forms can have straight-chain or branched-chain isomers. The lowercase prefix ''n-'' denotes the straight-chain isomer; for example, ''n''-butane is straight-chain butane, whereas ''i''-butane is isobutane. Cycloalkanes are isomers of alkenes, not of alkanes, because the ring's closure involves a C-C bond. Having no rings (aromatic or otherwise), all open-chain compounds are aliphatic. Typically in bioc ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ketone
In organic chemistry, a ketone is a functional group with the structure R–C(=O)–R', where R and R' can be a variety of carbon-containing substituents. Ketones contain a carbonyl group –C(=O)– (which contains a carbon-oxygen double bond C=O). The simplest ketone is acetone (where R and R' is methyl), with the formula . Many ketones are of great importance in biology and in industry. Examples include many sugars (ketoses), many steroids (e.g., testosterone), and the solvent acetone. Nomenclature and etymology The word ''ketone'' is derived from ''Aketon'', an old German word for ''acetone''. According to the rules of IUPAC nomenclature, ketone names are derived by changing the suffix ''-ane'' of the parent alkane to ''-anone''. Typically, the position of the carbonyl group is denoted by a number, but traditional nonsystematic names are still generally used for the most important ketones, for example acetone and benzophenone. These nonsystematic names are considere ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alcohol (chemistry)
In chemistry, an alcohol is a type of organic compound that carries at least one hydroxyl () functional group bound to a saturated carbon atom. The term ''alcohol'' originally referred to the primary alcohol ethanol (ethyl alcohol), which is used as a drug and is the main alcohol present in alcoholic drinks. An important class of alcohols, of which methanol and ethanol are the simplest examples, includes all compounds which conform to the general formula . Simple monoalcohols that are the subject of this article include primary (), secondary () and tertiary () alcohols. The suffix ''-ol'' appears in the IUPAC chemical name of all substances where the hydroxyl group is the functional group with the highest priority. When a higher priority group is present in the compound, the prefix ''hydroxy-'' is used in its IUPAC name. The suffix ''-ol'' in non-IUPAC names (such as paracetamol or cholesterol) also typically indicates that the substance is an alcohol. However, some compou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Naphthoquinone
Naphthoquinones constitute a class of organic compounds structurally related to naphthalene. Two isomers are common for the parent naphthoquinones: * 1,2-Naphthoquinone * 1,4-Naphthoquinone Natural products * Alkannin * Hexahydroxy-1,4-naphthalenedione * Juglone * Lapachol * Lawsone * Menatetrenone * 2-Methoxy-1,4-naphthoquinone, a compound found in ''Impatiens'' species * Nigrosporin B * 2,3,5,6,8-Pentahydroxy-1,4-naphthalenedione * Phylloquinone * Plumbagin * 2,3,5,7-Tetrahydroxy-1,4-naphthalenedione * Vitamin K and related compounds Synthetic naphthoquinones * Menadione (2-Methyl-1,4-naphthoquinone), a vitamin K mimic * 5,8-Dihydroxy-1,4-naphthoquinone and dihydroxynaphthoquinones * Atovaquone * Buparvaquone, an antiprotozoal drug used in veterinary medicine * Diazonaphthoquinone, a diazo derivative of naphthoquinone * 1,2-Naphthoquinone, from the biodegradation of naphthalene. See also * Hydroxynaphthoquinone A hydroxynaphthoquinone (formula: ) is any of sever ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phalangiidae
The Phalangiidae are a family of harvestmen with about 380 known species. The best known is ''Phalangium opilio''. ''Dicranopalpus ramosus'' is an invasive species in Europe. It is not to be confused with the harvestman family Phalangodidae, which belongs to the suborder Laniatores. Name The name of the type genus is derived from Ancient Greek ''phalangion'' "harvestman". (2007): Phalangiidae Latreille, 1802. In: Pinto-da-Rocha ''et al.'' 2007: 123ff Systematics * Dicranopalpinae :* '' Amilenus'' Martens, 1969 (1 species; central Europe) :* '' Dicranopalpus'' Doleschall, 1852 (12 species; Europe, South America) :* '' Lanthanopilio'' Cokendolpher & Cokendolpher, 1984 (1 species) * Oligolophinae Banks, 1893 :* '' Lacinius'' Thorell, 1876 (17 species; China, Europe, North America) :* '' Mitopiella'' Banks, 1930 (1 species; Borneo) :* '' Mitopus'' Thorell, 1876 (9 species; Eurasia, North America) :* '' Odiellus'' Roewer, 1923 (17 species; Eurasia, North Africa, North America) :* ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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