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Eusphinctus
''Sphinctomyrmex'' is a genus of ants in the subfamily Dorylinae. The genus is a tropical and distinctive group, originally described by Mayr based on a single gyne collected in Brazil. Morphologically, the genus is characterized by the unique arrangement of the gastric The stomach is a muscular, hollow organ in the gastrointestinal tract of humans and many other animals, including several invertebrates. The stomach has a dilated structure and functions as a vital organ in the digestive system. The stomach i ... segments, which are nearly equal in length and separated from each other by distinct constrictions. Very little is known on the natural history of ''Sphinctomyrmex''. The few observations so far suggest that ants of this genus are nomadic predators of other ants. The genus '' Zasphinctus'' and approximately 20 species were formerly included, but were split out during revision of the Dorylinae genera by Borowiec (2016). Species * '' Sphinctomyrmex marcoyi'' * '' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zasphinctus
''Zasphinctus'' is a genus of ants in the subfamily Dorylinae. The genus is a pantropical and distinctive group, originally described by Wheeler (1918) based on ''"Sphinctomyrmex" turneri'' collected in Queensland, Australia. ''Zasphinctus'' was first described as a subgenus of ''"Eusphinctus"'', and then synonymized into ''Sphinctomyrmex'', to later be raised to full genus status by Borowiec (2016), who included approximately 20 species in the new genus circumscription. Species * '' Zasphinctus asper'' * '' Zasphinctus caledonicus'' * '' Zasphinctus cedaris'' * '' Zasphinctus chariensis'' * '' Zasphinctus clarus'' * ''Zasphinctus cribratus'' * '' Zasphinctus duchaussoyi'' * '' Zasphinctus emeryi'' * '' Zasphinctus froggatti'' * ''Zasphinctus imbecilis'' * ''Zasphinctus marcoyi'' * ''Zasphinctus mjobergi'' * ''Zasphinctus myops'' * ''Zasphinctus nigricans'' * ''Zasphinctus obamai'' * ''Zasphinctus occidentalis'' ( * ''Zasphinctus rufiventris'' * ''Zasphinctus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorylinae
Dorylinae is an ant subfamily, with distributions in both the Old World and New World. Brady ''et al.'' (2014) synonymized the previous dorylomorph subfamilies (Aenictinae, Aenictogitoninae, Cerapachyinae, Ecitoninae, and Leptanilloidinae) under Dorylinae., while Borowiec (2016) reviewed and revised the genera, resurrecting many genera which had previously been merged. Dorylinae genera are suggested to have evolved sometime between , subsequently undergoing rapid adaptive radiation events during their early history. Genera *''Acanthostichus'' Mayr, 1887 *''Aenictogiton'' Emery, 1901 *''Aenictus'' Shuckard, 1840 *''Cerapachys'' Smith, 1857 *''Cheliomyrmex'' Mayr, 1870 *'' Chrysapace'' Crawley, 1924 *''Cylindromyrmex'' Mayr, 1870 *''Dorylus'' Fabricius, 1793 *'' Eburopone'' Borowiec, 2016 *''Eciton'' Latreille, 1804 *'' Eusphinctus'' Emery, 1893 *''Labidus'' Jurine, 1807 *'' Leptanilloides'' Mann, 1923 *'' Lioponera'' Mayr, 1879 *'' Lividopone'' Bolton & Fisher, 2016 *''Neivamyrme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gustav Mayr
Gustav L. Mayr (12 October 1830 – 14 July 1908) was an Austrian entomologist and professor in Budapest and Vienna. He specialised in Hymenoptera, being particularly known for his studies of ants.1908. Obituary. Prof. Gustav Mayr. Entomological News 19:396 Bibliography In 1868, he was the first to describe the . He is credited with naming the harvesting ant species, ''Aphaenogaster treatae'', for naturalist Mary Davis Treat, in honor of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gaster (insect Anatomy)
The gaster is the bulbous posterior portion of the metasoma found in hymenopterans of the suborder Apocrita ( bees, wasps and ants). This begins with abdominal segment III on most ants, but some make a constricted postpetiole out of segment III, in which case the gaster begins with abdominal segment IV. Certain ants in the genus '' Cataglyphis'', specifically ''Cataglyphis bicolor'' and ''Cataglyphis fortis'', have a cubiform petiole that allows them to decrease their inertia Inertia is the idea that an object will continue its current motion until some force causes its speed or direction to change. The term is properly understood as shorthand for "the principle of inertia" as described by Newton in his first law ... (and therefore increase their speed) by raising their gaster into an upright position. References Insect anatomy {{insect-anatomy-stub de:Gaster ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
AntWeb
AntWeb is the leading online database on ants: storing specimens images and records, and natural history information, and documenting over 490,000 specimens across over 35,000 taxa 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 nam ... of ants in its open source and community driven repository . It was set up by Brian L. Fisher in 2002, and cost US$30,000 dollars to build. References External links Website Entomological databases Myrmecology {{Database-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphinctomyrmex Stali
''Sphinctomyrmex stali'' (named after the Swedish entomologist Carl Stål) is a Neotropical species of ants in the subfamily Dorylinae. Mayr described the genus ''Sphinctomyrmex'' with ''S. stali'' as its type species, based on a single dealate gyne. However, except for the holotype, there are no records of normal (alate) gynes for ''S. stali''. All reproductive females collected after the original description are ergatoids. Distribution and habitat ''Sphinctomyrmex stali'' is known from sparse localities along the southeastern portion of the Brazilian Atlantic Forest, from Santa Catarina to southern Bahia. Recent collections suggest that this species can be most commonly found in submontane forests (above 600 m) of the states of Santa Catarina and São Paulo, from whence come most of the specimens in collections. In a single leaf-litter sample collected in São Bonifácio, Santa Catarina, six workers and two ergatoid gynes very similar to the workers, were captured, which s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphinctomyrmex Schoerederi
''Sphinctomyrmex schoerederi'' is a Neotropical species of ants in the subfamily Dorylinae. ''S. schoerederi'' is known only from the holotype, collected in a leaf litter sample from a forest remnant in the campus of Universidade Federal de Viçosa in Brazil, where it occurs in sympatry with '' S. stali''. Gynes and males are unknown. Description Nothing is known about its biology. This species can hardly be confounded with other congeners given the combination of subquadrate head, anterior margin of clypeus with two lateral lobes projecting over the mandibles In anatomy, the mandible, lower jaw or jawbone is the largest, strongest and lowest bone in the human facial skeleton. It forms the lower jaw and holds the lower tooth, teeth in place. The mandible sits beneath the maxilla. It is the only movabl ..., abdominal segments IV to VII with strongly developed pretergites, and the presence of short appressed hairs on the dorsal surface of gaster. References * * Dorylin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sphinctomyrmex Marcoyi
''Sphinctomyrmex marcoyi'' is a Neotropical species of ants in the subfamily Dorylinae. It is the only ''Sphinctomyrmex'' species recorded in the Amazon Forest. Gynes and males are unknown. Description ''S. marcoyi'' is known only from the holotype, a worker collected from a soil sample. Nothing is known about its biology. ''S. marcoyi'' can be easily separated from other species in the genus by its comparatively diminutive size, conspicuously elongate head, comparatively short scapes, and by the presence of a smooth longitudinal stripe on the dorsum of mesosoma, which is otherwise covered by foveolae Foveolar cells or surface mucous cells are mucus-producing cells which cover the inside of the stomach, protecting it from the corrosive nature of gastric acid. These cells line the gastric mucosa (mucous neck cells are found in the necks of the ... and subdecumbent to erect hairs. References * * Dorylinae Insects described in 2011 Hymenoptera of South America { ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Brazil
Brazil ( pt, Brasil; ), officially the Federative Republic of Brazil (Portuguese: ), is the largest country in both South America and Latin America. At and with over 217 million people, Brazil is the world's fifth-largest country by area and the seventh most populous. Its capital is Brasília, and its most populous city is São Paulo. The federation is composed of the union of the 26 States of Brazil, states and the Federal District (Brazil), Federal District. It is the largest country to have Portuguese language, Portuguese as an List of territorial entities where Portuguese is an official language, official language and the only one in the Americas; one of the most Multiculturalism, multicultural and ethnically diverse nations, due to over a century of mass Immigration to Brazil, immigration from around the world; and the most populous Catholic Church by country, Roman Catholic-majority country. Bounded by the Atlantic Ocean on the east, Brazil has a Coastline of Brazi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Morphology (biology)
Morphology is a branch of biology dealing with the study of the form and structure of organisms and their specific structural features. This includes aspects of the outward appearance (shape, structure, colour, pattern, size), i.e. external morphology (or eidonomy), as well as the form and structure of the internal parts like bones and organs, i.e. internal morphology (or anatomy). This is in contrast to physiology, which deals primarily with function. Morphology is a branch of life science dealing with the study of gross 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 Friedrich Burdach ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Felix Santschi
Felix Santschi (1 December 1872 – 20 November 1940) was a Swiss entomologist known for discovering that ants use the sun as a compass and for describing about 2000 taxa of ants. Santschi is known for his pioneering work on the navigational abilities of ants. In one experiment, he investigated the way harvester ant Harvester ant, also known as harvesting ant, is a common name for any of the species or genera of ants that collect seeds (called seed predation), or mushrooms as in the case of ''Euprenolepis procera'', which are stored in the nest in communal ...s used the sky to navigate. He found that as long as even a small patch of sky was visible, the ants could return directly to the nest after gathering food. However, when the sky was completely hidden, they lost their sense of direction and began moving haphazardly. Some seventy years later it was shown that ants are guided by the polarization of light. References 1872 births 1940 deaths Swiss entomologists Myrme ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gyne
The gyne (, from Greek γυνή, "woman") is the primary reproductive female caste of social insects (especially ants, wasps, and bees of order Hymenoptera, as well as termites). Gynes are those destined to become queens, whereas female workers are typically barren and cannot become queens. Having a queen is what makes a "queenright" hive, nest, or colony of eusocial insects. A colony with multiple queens is said to be a polygyne form, whereas one with only one is a monogyne form. The red imported fire ant is known to have colonies in both polygyne and monogyne forms. The small red ant, ''Leptothorax acervorum'', has colonies that switch from monogyny to polygyny as a result of seasonal fluctuations. The little fire ant ''Wasmannia auropunctata'' produces unique kinds of meiotic oocytes with a drastic reduction in recombination. These oocytes may either fuse together for gyne production ( automictic parthenogenesis with central fusion) or be fertilized by male gametes for the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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