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Aneuretinae
Aneuretinae is a subfamily of ants consisting of a single extant species, ''Aneuretus simoni'' ( Sri Lankan relict ant), and 9 fossil species. Earlier, the phylogenetic position of ''A. simoni'' was thought to be intermediate between primitive and advanced subfamilies of ants, but recent studies have shown it is the nearest living relative of subfamily Dolichoderinae. Genera *Aneuretini Emery, 1913 **†'' Aneuretellus'' Dlussky, 1988 **'' Aneuretus'' Emery, 1893 **†'' Mianeuretus'' Carpenter, 1930 **†'' Paraneuretus'' Wheeler, 1915 **†'' Protaneuretus'' Wheeler, 1915 *†Pityomyrmecini Wheeler, 1915 **†'' Pityomyrmex'' Wheeler, 1915 *''incertae sedis ' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertain ...'' **†'' Britaneuretus'' Dlussky & Perfilieva, 2014 **†'' Cananeure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aneuretinae
Aneuretinae is a subfamily of ants consisting of a single extant species, ''Aneuretus simoni'' ( Sri Lankan relict ant), and 9 fossil species. Earlier, the phylogenetic position of ''A. simoni'' was thought to be intermediate between primitive and advanced subfamilies of ants, but recent studies have shown it is the nearest living relative of subfamily Dolichoderinae. Genera *Aneuretini Emery, 1913 **†'' Aneuretellus'' Dlussky, 1988 **'' Aneuretus'' Emery, 1893 **†'' Mianeuretus'' Carpenter, 1930 **†'' Paraneuretus'' Wheeler, 1915 **†'' Protaneuretus'' Wheeler, 1915 *†Pityomyrmecini Wheeler, 1915 **†'' Pityomyrmex'' Wheeler, 1915 *''incertae sedis ' () or ''problematica'' is a term used for a taxonomic group where its broader relationships are unknown or undefined. Alternatively, such groups are frequently referred to as "enigmatic taxa". In the system of open nomenclature, uncertain ...'' **†'' Britaneuretus'' Dlussky & Perfilieva, 2014 **†'' Cananeure ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aneuretellus
''Aneuretellus'' is an extinct genus of ant in the formicid subfamily Aneuretinae, and is one of eight genera of the subfamily. The genus contains a single described species ''Aneuretellus deformis'' and is known from one Middle Eocene fossil which was found in Sakhalin in the Russian Far East. History and classification When first described, ''A. deformis'' was known from a single fossil insect included in a transparent chunk of Sakhalin amber. When the fossil was described it was part of the amber collections housed in the Paleontological Institute of the Russian Academy of Sciences. The amber was recovered from fossil bearing rocks in the Sakhalin region of Eastern Russia. Sakhalin amber is noted for having undergone high temperatures and pressures after the resin was buried. As a result insects and other inclusions in the amber are not as well preserved as those of other amber locations, even those of older ambers. The inclusions are most of the time carbonized reducin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cananeuretus
''Cananeuretus'' is an extinct genus of ant in the Formicidae subfamily Aneuretinae, and is one of two Cretaceous genera of the subfamily. The genus contains a single described species ''Cananeuretus occidentalis'' and is known from one Late Cretaceous fossil which has been found in North America. History and classification ''Cananeuretus'' is known from an adult fossil, the holotype, specimen number "TMP 8.89.7", and an additional partial worker tentatively assigned to the species. At the time of description, both specimens were residing in the paleontology collections housed at the Royal Tyrell Museum, Drumheller, Alberta. The holotype specimen is composed of a mostly complete worker caste adult female which has been preserved as an inclusion in a transparent chunk of clear yellow Canadian amber. The amber specimen was recovered from deposits of the Foremost Formation near Grassy Lake, Alberta, Canada. Canadian amber has been dated to an age of approximately 79–78 mil ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sri Lankan Relict Ant
The Sri Lankan relict ant (''Aneuretus simoni'') is a species of ant placed in a tribe of its own within the family Formicidae. The genus is monotypic, with the only species endemic to Sri Lanka, where it is known from just a few locations. It is one of the few ant species considered endangered. Description The species is the only extant genus in the tribe Aneuretini (other members include the extinct ''Protaneuretus'', ''Paraneretus'', and ''Mianeuretus''). They are believed to be intermediate in their phylogenetic position between the Myrmeciinae-Ponerinae and the Dolichoderinae. The workers show very distinct dimorphism with "majors" being much larger than the "minors" and lacking few workers intermediate in size. The minor workers are found in the largest numbers within a nest and have small compound eyes having only about 30 ommatidia (units within the compound eye). The antennae have 12 segments, with the segments increasing gradually in size from the base to the tip. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ant Subfamilies
Ants (family Formicidae in the order Hymenoptera) are the most species-rich of all social insects, with more than 12,000 described species and many others awaiting description. Formicidae is divided into 21 subfamilies, of which 17 contain extant taxa, while four are exclusively fossil. Ants have come to occupy virtually all major terrestrial habitats, with the exception of tundra and cold ever-wet forests. They display a wide range of social behaviors, foraging habits and associations with other organisms, which has generated scientific and public interest. Clades Beginning in the 1990s, molecular ( DNA sequence) data have come to play a central role in attempts to reconstruct the ant "tree of life". Molecular phylogenetic analyses based on multiple nuclear genes have yielded robust results that reinforce some preexisting views but overturn others – and suggest that there has been considerable morphological convergence among some ant lineages. Molecular data provid ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aneuretus
The Sri Lankan relict ant (''Aneuretus simoni'') is a species of ant placed in a tribe of its own within the family Formicidae. The genus is monotypic, with the only species endemic to Sri Lanka, where it is known from just a few locations. It is one of the few ant species considered endangered. Description The species is the only extant genus in the tribe Aneuretini (other members include the extinct ''Protaneuretus'', ''Paraneretus'', and ''Mianeuretus''). They are believed to be intermediate in their phylogenetic position between the Myrmeciinae-Ponerinae and the Dolichoderinae. The workers show very distinct dimorphism with "majors" being much larger than the "minors" and lacking few workers intermediate in size. The minor workers are found in the largest numbers within a nest and have small compound eyes having only about 30 ommatidia (units within the compound eye). The antennae have 12 segments, with the segments increasing gradually in size from the base to the tip ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmomyrma
''Burmomyrma'' is an extinct genus of aculeate hymenopteran, suggested to be an ant. The genus contains a single described species, ''Burmomyrma rossi''. ''Burmomyrma'' is known from a single Middle Cretaceous fossil which was found in Asia. History and classification ''Burmomyrma'' is known from a solitary adult fossil, the holotype, specimen number BMNH 19125. While the type specimen was collected in the early 1900s and deposited in the Natural History Museum in London, description of the specimen did not occur until nearly 80 years later. The holotype specimen is composed of a mostly complete adult female which has been preserved as an inclusion in transparent chunks of deep yellow and relatively clear Burmese amber. The amber specimen was recovered from deposits in Kachin State of Myanmar. Burmese amber has been radiometrically dated using U- Pb isotopes, yielding an age of approximately 99 million years old, close to the Aptian – Cenomanian boundary. T ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Paraneuretus
''Paraneuretus'' is an extinct genus of formicid in the ant subfamily Aneuretinae known from fossils found in Asia and Europe. The genus contains three middle to late Eocene age species, ''Paraneuretus dubovikoffi'', ''Paraneuretus longicornis'', and ''Paraneuretus tornquisti''. History and classification ''Paraneuretus'' is known from over twenty five adult fossil specimens which are composed of complete adult males, female workers and queens. The first fossils were discovered preserved as inclusions in transparent chunks of Baltic amber. Baltic amber is approximately forty six million years old, having been deposited during Lutetian stage of the Middle Eocene. There is debate on what plant family the amber was produced by, with evidence supporting relatives of either ''Pinus'', '' Agathis'' or '' Sciadopitys''. The paleoenvironment of the Eocene Baltic forests were two ''Paraneuretus'' species lived was humid temperate to subtropical islands. The forests were composed of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phylogenetic
In biology, phylogenetics (; from Greek φυλή/ φῦλον [] "tribe, clan, race", and wikt:γενετικός, γενετικός [] "origin, source, birth") is the study of the evolutionary history and relationships among or within groups of organisms. These relationships are determined by Computational phylogenetics, phylogenetic inference methods that focus on observed heritable traits, such as DNA sequences, protein amino acid sequences, or morphology. The result of such an analysis is a phylogenetic tree—a diagram containing a hypothesis of relationships that reflects the evolutionary history of a group of organisms. The tips of a phylogenetic tree can be living taxa or fossils, and represent the "end" or the present time in an evolutionary lineage. A phylogenetic diagram can be rooted or unrooted. A rooted tree diagram indicates the hypothetical common ancestor of the tree. An unrooted tree diagram (a network) makes no assumption about the ancestral line, and does ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dolichoderinae
Dolichoderinae is a subfamily of ants, which includes species such as the Argentine ant (''Linepithema humile''), the erratic ant, the odorous house ant, and the cone ant. The subfamily presents a great diversity of species throughout the world, distributed in different biogeographic realms, from the Palearctic, Nearctic, Afrotropical region and Malaysia, to the Middle East, Australian, and Neotropical regions. This subfamily is distinguished by having a single petiole (no post-petiole) and a slit-like orifice, from which chemical compounds are released. Dolichoderine ants do not possess a sting, unlike ants in some other subfamilies, such as Ponerinae and Myrmicinae, instead relying on the chemical defensive compounds produced from the anal gland. Of the compounds produced by dolichoderine ants, several terpenoids were identified including the previously unknown iridomyrmecin, isoiridomyrmecin, and iridodial. Such compounds are responsible for the smell given off by ant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
