Atractus

	Atractus ''Atractus'' is a genus of Colubridae, colubrid ground snakes in the subfamily Dipsadinae. The genus includes more than 140 distinct species. Geographic range Snakes of the genus ''Atractus'' are Endemism, endemic to Central America, Central and South America. Description In the genus ''Atractus'' the maxilla is short, with 8–12 teeth; the maxillary and Mandible, mandibular teeth decrease in size posteriorly. The head is not distinct from the neck. The eye is small, with a round or subelliptic pupil. The nostril is between two nasal scales. The Ocular scales, preocular is usually absent, and the Loreal scale, loreal and prefrontal scales enter the orbit. The body is cylindrical. The dorsal scales are smooth, without apical pits, in 15 or 17 rows. The ventral scales are rounded. The tail can be either short or rather long. The Subcaudal scales, subcaudals are paired. Reproduction The genus ''Atractus'' is Oviparity, oviparous. Species The following species are recognized as b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Atractus Acheronius ''Atractus acheronius'' is a species of snake in the family Colubridae. The species can be found in Venezuela. References Atractus, acheronius Reptiles of Venezuela Endemic fauna of Venezuela category:Snakes of South America Reptiles described in 2009 {{Dipsadinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Atractus Aboiporu ''Atractus aboiporu'' is a species of snake in the family Colubridae. The species can be found in Brazil Brazil, officially the Federative Republic of Brazil, is the largest country in South America. It is the world's List of countries and dependencies by area, fifth-largest country by area and the List of countries and dependencies by population .... References aboiporu Snakes of Brazil Endemic reptiles of Brazil Reptiles described in 2019 Taxa named by Paulo Roberto Melo-Sampaio {{Dipsadinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Dipsadinae Dipsadinae is a large subfamily of colubroid snakes, sometimes referred to as a family (Dipsadidae). Species of the subfamily Dipsadinae are found in most of the Americas, including the West Indies, and are most diverse in South America. There are more than 700 member species. Dipsadinae are an ecologically and morphologically diverse group of mostly small to moderate-sized snakes, typically less than in total length. Some are arboreal, but others are aquatic or terrestrial and may even burrow. Most are oviparous. Many eat frogs or lizards, and some consume mammals and birds. Several genera (e.g. '' Adelphicos'', '' Atractus'', '' Geophis'', '' Dipsas'', '' Ninia'', '' Sibon'', '' Sibynomorphus'', '' Tropidodipsas'') are specialized feeders on gooey and slimy prey, such as frog eggs, earthworms, snails, and slugs. Almost all species are completely harmless to humans, although a few genera (e.g. '' Borikenophis'', '' Cubophis'', '' Heterodon'', '' Hydrodynastes'', ''Philodryas'') ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Johann Georg Wagler Johann Georg Wagler (28 March 1800 – 23 August 1832) was a German herpetologist and ornithologist. Wagler was assistant to Johann Baptist von Spix, and gave lectures in zoology at the Ludwig Maximilian University of Munich after it was moved to Munich. He worked on the extensive collections brought back from Brazil by Spix, and published partly together with him books on reptiles from Brazil. Wagler wrote ''Monographia Psittacorum'' (1832), which included the correct naming of the blue macaws. In 1832, Wagler died of an accidental self-inflicted gunshot wound while out collecting in München-Moosach. Life Johann Georg Wagler was a German naturalist and scientist in the 19th century, whose works primarily focused on herpetology and ornithology (Beolens, Watkins & Grayson, 2011). Johan Georg Wagler was born on 28 March 1800, in the city of Nuremberg, where the Chancellor of the City Court was Wagler's father (Wagler, 1884). After taking up gymnastics at Nuremberg, Johann Georg W ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Colubridae Colubridae (, commonly known as colubrids , from , 'snake') is a family of snakes. With 249 genera, it is the largest snake family. The earliest fossil species of the family date back to the Late Eocene epoch, with earlier origins suspected. Colubrid snakes are found on every continent except Antarctica. Description Colubrids are a very diverse group of snakes. They can exhibit many different body styles, body sizes, colors, and patterns. They can also live in many different types of habitats including aquatic, terrestrial, semi-arboreal, arboreal, desert, mountainous forests, semi-fossorial, and brackish waters. A primarily shy and harmless group of snakes, the vast majority of colubrids are not venomous, nor do most colubrids produce venom that is medically significant to mammals. However, the bites of some can escalate quickly to emergency situations. Furthermore, within the Colubridae, the South African boomslang and twig snakes, as well as the Asian keelback snakes (' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Dorsal Scales In snakes, the dorsal scales are the longitudinal series of plates that encircle the body, but do not include the ventral scales. Campbell JA, Lamar WW (2004). ''The Venomous Reptiles of the Western Hemisphere''. Ithaca and London: Comstock Publishing Associates. 2 volumes. 870 pp. 1,500 plates. . When counting dorsal scales, numbers are often given for three points along the body, for example 19:21:17. These numbers correspond to the number of dorsal scales around the body at a head's length behind the head, at midbody and at a head's length before the vent. If only one number is given, it is for the midbody count. Dorsal scale are easiest to count diagonally, starting with the paraventral scale row. In doing so, it is often noted that certain scale rows are raised, keeled or smooth as opposed to the others.U.S. Navy (1991). ''Poisonous Snakes of the World''. United States Government. New York: Dover Publications Inc. 203 pp. . See also Snake scales Anatomical terms of locat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Omar Torres-Carvajal {{Short pages monitor ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Binomial Nomenclature In taxonomy, binomial nomenclature ("two-term naming system"), also called binary nomenclature, is a formal system of naming species of living things by giving each a name composed of two parts, both of which use Latin grammatical forms, although they can be based on words from other languages. Such a name is called a binomial name (often shortened to just "binomial"), a binomen, name, or a scientific name; more informally, it is also called a Latin name. In the International Code of Zoological Nomenclature (ICZN), the system is also called nomenclature, with an "n" before the "al" in "binominal", which is a typographic error, meaning "two-name naming system". The first part of the name – the '' generic name'' – identifies the genus to which the species belongs, whereas the second part – the specific name or specific epithet – distinguishes the species within the genus. For example, modern humans belong to the genus ''Homo'' and within this genus to the species ''Hom ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]