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Omilteme Cottontail
The Omilteme cottontail (''Sylvilagus insonus'') is a cottontail rabbit found only in the state of Guerrero, Mexico in the mountain range of Sierra Madre del Sur. Belonging to the family Leporidae, it is one of fourteen species in the genus ''Sylvilagus'', a genus restricted to the New World. The Omilteme cottontail is considered one of the most endangered rabbit species in the world and is only known and been described by very few specimens. Description The Omilteme cottontail is a large rabbit with long ears (greater than 53mm from the base), hind feet of medium length (greater than 81mm) and a short tail. This rabbit has a very distinct coat colouration. Around the nose and orbital area, the coat is a dull grey. The convex surface of the ears is a dark brown-black colour and the black is also very concentrated along the anterior border as well as on the tips of the ears. The dorsal side is rufous (a red-brown colour) mixed with black while the sides are grey-black in colour. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Edward William Nelson
Edward William Nelson (May 8, 1855 – May 19, 1934) was an American naturalist and ethnologist. A collector of specimens and field naturalist of repute, he became a member of several expeditions to survey the fauna and flora. He was part of a team with Clinton Hart Merriam that took part in the Death Valley Expedition. He also explored the Yosemite Valley. A number of vertebrate species are named after him. Biography Nelson was born in Manchester, New Hampshire, on May 8, 1855, the first son of William and Martha () Nelson. Nelson and his brother then lived with his maternal grandparents in the Adirondacks when his father joined the Union Army and mother went to Baltimore as a nurse. Here he fell in love with the wilderness. Nelson moved to Chicago after his father was killed in the Civil War and his mother established a dressmaking business. In 1871, his large insect collection was lost in the Chicago Fire and the family was left homeless. This was the time that h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mexican Cottontail
The Mexican cottontail (''Sylvilagus cunicularius'') is a species of cottontail rabbit in the family Leporidae. It is endemic to Mexico where its natural habitats are temperate forests, subtropical or tropical dry forests and pastureland. Taxonomy The Mexican cottontail was first described by the English naturalist George Robert Waterhouse in 1848 as part of his work in classifying specimens in the collection of the museum of the Zoological Society of London. Three subspecies are recognized: ''Sylvilagus cunicularius cunicularius'', ''S. c. insolitus'', and ''S. c. pacificus''. Description The Mexican cottontail is one of the largest members of its genus at , and is the largest Mexican rabbit. It has coarse reddish-brown or greyish-brown fur and white underparts. In maturity, the pelage becomes a paler, yellowish-gray color. External body measurements include a body length of , a tail length of , hind foot length of , and an ear length of . Populations from t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Edward William Nelson
In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mammals Described In 1904
Mammals () are a group of vertebrate animals constituting the class Mammalia (), characterized by the presence of mammary glands which in females produce milk for feeding (nursing) their young, a neocortex (a region of the brain), fur or hair, and three middle ear bones. These characteristics distinguish them from reptiles (including birds) from which they diverged in the Carboniferous, over 300 million years ago. Around 6,400 extant species of mammals have been described divided into 29 orders. The largest orders, in terms of number of species, are the rodents, bats, and Eulipotyphla (hedgehogs, moles, shrews, and others). The next three are the Primates (including humans, apes, monkeys, and others), the Artiodactyla (cetaceans and even-toed ungulates), and the Carnivora (cats, dogs, seals, and others). In terms of cladistics, which reflects evolutionary history, mammals are the only living members of the Synapsida (synapsids); this clade, together with Sauropsida ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sylvilagus
Cottontail rabbits are the leporid species in the genus ''Sylvilagus'', found in the Americas. Most ''Sylvilagus'' species have stub tails with white undersides that show when they retreat, giving them their characteristic name. However, this feature is not present in all cottontails nor is it unique to the genus. The genus is widely distributed across North America, Central America and northern and central South America, though most species are confined to some particular regions. Most species live in nests called forms, and all have altricial young. An adult female averages three litters per year, which can occur in any season; occurrence, and litter size depend on several factors including time of the year, weather, and location. The average litter size is four but can range from as few as two to as many as eight, most of whom do not go on to survive to adulthood. Cottontail rabbits show a greater resistance to myxomatosis than European rabbits. Evolution Cottontails ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nocturnality
Nocturnality is an animal behavior characterized by being active during the night and sleeping during the day. The common adjective is "nocturnal", versus diurnal meaning the opposite. Nocturnal creatures generally have highly developed senses of hearing, smell, and specially adapted eyesight. Some animals, such as cats and ferrets, have eyes that can adapt to both low-level and bright day levels of illumination (see metaturnal). Others, such as bushbabies and (some) bats, can function only at night. Many nocturnal creatures including tarsiers and some owls have large eyes in comparison with their body size to compensate for the lower light levels at night. More specifically, they have been found to have a larger cornea relative to their eye size than diurnal creatures to increase their : in the low-light conditions. Nocturnality helps wasps, such as ''Apoica flavissima'', avoid hunting in intense sunlight. Diurnal animals, including squirrels and songbirds, are active d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Omiltemi Ecological State Park
Omiltemi Ecological State Park is a protected area in southern Mexico. It is located in the Sierra Madre del Sur of Guerrero. The park includes well-preserved pine–oak forests and cloud forests. Geography Omiltemi Ecological State Park is located in the Sierra Madre del Sur, 15 km west of Chilpancingo. The topography is rugged, with steep slopes and deep gorges. Elevations range from 1800 to 2800 meters. Flora and fauna The park is in the Sierra Madre del Sur pine–oak forests ecoregion. Plant communities include pine forest, pine–oak forest, cloud forest, oak forest, humid oak forest, and areas of dry scrub. The forests of the reserve are some of the best-preserved in Guerrero. 595 species of vascular plants from 102 families have been identified in the park, including 103 species orchids in 41 genera. 167 species of birds have been recorded. 79% of species are permanent residents, 18% are winter residents, 1% are summer residents, and 2% are of uncertain seasonality.Bird ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Type Locality (biology)
In biology, a type is a particular specimen (or in some cases a group of specimens) of an organism to which the scientific name of that organism is formally attached. In other words, a type is an example that serves to anchor or centralizes the defining features of that particular taxon. In older usage (pre-1900 in botany), a type was a taxon rather than a specimen. A taxon is a scientifically named grouping of organisms with other like organisms, a set that includes some organisms and excludes others, based on a detailed published description (for example a species description) and on the provision of type material, which is usually available to scientists for examination in a major museum research collection, or similar institution. Type specimen According to a precise set of rules laid down in the International Code of Zoological Nomenclature (ICZN) and the International Code of Nomenclature for algae, fungi, and plants (ICN), the scientific name of every taxon is almost a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dice's Cottontail
Dice's cottontail (''Sylvilagus dicei'') is a species of cottontail rabbit in the family Leporidae. It is found in Costa Rica and Panama, in páramo and cloud forest habitats. Taxonomy Dice's cottontail was first described by William P. Harris, Jr., in 1932. It was at one time thought to be a subspecies of the common tapetí or forest cottontail (''Sylvilagus brasiliensis'') but is now recognised as a separate species. The type locality is El Copey de Dota, in the Cordillera de Talamanca, Costa Rica, at . Description Dice's cottontail is one of the larger cottontail rabbits. Its back is dappled black and brown and its flanks greyish-black. The blackish tail is tiny and the underparts are dull white. It has a brown patch on its throat. Distribution and habitat Dice's cottontail is endemic to the Cordillera de Talamanca which straddles the border between Panama and Costa Rica. Its habitat is Alpine meadows and Páramo grasslands above the tree line. It also occurs in the oak-domi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cottontail Rabbit
Cottontail rabbits are the leporid species in the genus ''Sylvilagus'', found in the Americas. Most ''Sylvilagus'' species have stub tails with white undersides that show when they retreat, giving them their characteristic name. However, this feature is not present in all cottontails nor is it unique to the genus. The genus is widely distributed across North America, Central America and northern and central South America, though most species are confined to some particular regions. Most species live in nests called forms, and all have altricial young. An adult female averages three litters per year, which can occur in any season; occurrence, and litter size depend on several factors including time of the year, weather, and location. The average litter size is four but can range from as few as two to as many as eight, most of whom do not go on to survive to adulthood. Cottontail rabbits show a greater resistance to myxomatosis than European rabbits. Evolution Cottontails ar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Forest Rabbit
The common tapeti (''Sylvilagus brasiliensis''), also known as the Brazilian cottontail, forest cottontail, or (formerly) simply tapeti is a species of cottontail rabbit. It is small to medium-sized with a small, dark tail, short hind feet, and short ears. As traditionally defined, its range extends from southern Mexico to northern Argentina, but this includes several distinctive population that have since been split into separate species. Under this narrower definition, the true tapeti only occurs in the Atlantic Rainforest of coastal northeastern Brazil and it is classified as " Endangered" by the IUCN. The American Society of Mammalogists concurs, but also tentatively classifies several distinct populations that have not yet received proper species names into ''S. brasiliensis'', and thus considers it to range from Venezuela south to Argentina. Taxonomy The species was first described scientifically by Carl Linnaeus in the 10th edition of Systema Naturae, published in 1753 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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