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Ravavy
''Ravavy'' is a Malagasy genus of ant in the subfamily Dolichoderinae containing the single species ''Ravavy miafina''. Description The genus is only known from males from Madagascar. The males are distinguished from all other described males in the dolichoderine genera by its unique mandibular shape. The elongate basal margin and reduced masticatory margin is considered apomorphic for the genus. The shape of the clypeus, length of scape and form of petiole, together form an inclusive diagnosis that isolates ''Ravavy'' from all other genera in the subfamily. No other described male is even superficially similar to ''Ravavy''. The shape of the mandible in ''Bothriomyrmex'', however, is reminiscent in some respects. The mandible in ''Bothriomyrmex'' is not triangular as in ''Tapinoma ''Tapinoma'' (from Greek ''ταπείνωμα'' low position) is a genus of ants that belongs to the subfamily Dolichoderinae. The genus currently comprises 74 described species distributed world ... [...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 ants ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bothriomyrmecini
Bothriomyrmecini is a tribe of Dolichoderinae ants with 5 genera. Genera *''Arnoldius'', Dubovikov, 2005 *''Bothriomyrmex'', Emery, 1869 *''Chronoxenus'', Santschi, 1919 *''Loweriella'', Shattuck, 1992 *''Ravavy ''Ravavy'' is a Malagasy genus of ant in the subfamily Dolichoderinae containing the single species ''Ravavy miafina''. Description The genus is only known from males from Madagascar. The males are distinguished from all other described males ...'', Fisher, 2009 References Dolichoderinae Ant tribes {{Dolichoderinae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Madagascar
Madagascar (; mg, Madagasikara, ), officially the Republic of Madagascar ( mg, Repoblikan'i Madagasikara, links=no, ; french: République de Madagascar), is an island country in the Indian Ocean, approximately off the coast of East Africa across the Mozambique Channel. At Madagascar is the world's List of island countries, second-largest island country, after Indonesia. The nation is home to around 30 million inhabitants and consists of the island of Geography of Madagascar, Madagascar (the List of islands by area, fourth-largest island in the world), along with numerous smaller peripheral islands. Following the prehistoric breakup of the supercontinent Gondwana, Madagascar split from the Indian subcontinent around 90 million years ago, allowing native plants and animals to evolve in relative isolation. Consequently, Madagascar is a biodiversity hotspot; over 90% of wildlife of Madagascar, its wildlife is endemic. Human settlement of Madagascar occurred during or befo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Apomorphic
In phylogenetics, an apomorphy (or derived trait) is a novel character or character state that has evolved from its ancestral form (or plesiomorphy). A synapomorphy is an apomorphy shared by two or more taxa and is therefore hypothesized to have evolved in their most recent common ancestor. ) In cladistics, synapomorphy implies homology. Examples of apomorphy are the presence of erect gait, fur, the evolution of three middle ear bones, and mammary glands in mammals but not in other vertebrate animals such as amphibians or reptiles, which have retained their ancestral traits of a sprawling gait and lack of fur. Thus, these derived traits are also synapomorphies of mammals in general as they are not shared by other vertebrate animals. Etymology The word —coined by German entomologist Willi Hennig—is derived from the Ancient Greek words (''sún''), meaning "with, together"; (''apó''), meaning "away from"; and (''morphḗ''), meaning "shape, form". Clade analysis ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zootaxa
''Zootaxa'' is a peer-reviewed scientific mega journal for animal taxonomists. It is published by Magnolia Press ''Magnolia'' is a large genus of about 210 to 340The number of species in the genus ''Magnolia'' depends on the taxonomic view that one takes up. Recent molecular and morphological research shows that former genera ''Talauma'', ''Dugandiodendr ... (Auckland, New Zealand). The journal was established by Zhi-Qiang Zhang in 2001 and new issues are published multiple times a week. From 2001 to 2020, more than 60,000 new species have been described in the journal accounting for around 25% of all new Taxon, taxa indexed in The Zoological Record in the last few years. Print and online versions are available. Temporary suspension from JCR The journal exhibited high levels of self-citation and its journal impact factor of 2019 was suspended from ''Journal Citation Reports'' in 2020, a sanction which hit 34 journals in total. Biologist Ross Mounce noted that high levels of ... [...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 of ants in its open source and community driven repository . It was set up by Brian L. Fisher Brian L. Fisher (born 1964 or 1965) is an American entomologist who works on the systematics of arthropods, with a particular focus on ants. He has discovered over 1000 species, including 900 species of ants in Madagascar. He mainly conducts fiel ... 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] |
Tapinoma
''Tapinoma'' (from Greek ''ταπείνωμα'' low position) is a genus of ants that belongs to the subfamily Dolichoderinae. The genus currently comprises 74 described species distributed worldwide in tropical and temperate regions. Members of are generalized foragers, nesting in a wide variety of habitats, ranging from grasslands, open fields, woodlands, to inside buildings. The majority of species nest in the ground under objects such as stones or tree logs, other species build nests under bark of logs and stumps, in plant cavities, insect galls or refuse piles. Species *''Tapinoma aberrans'' (Santschi, 1911) *''Tapinoma acuminatum'' Forel, 1907 *''Tapinoma albinase'' (Forel, 1910) *''Tapinoma albomaculatum'' (Karavaiev, 1926) *''Tapinoma amazone'' Wheeler, 1934 *''Tapinoma andamanense'' Forel, 1903 *''Tapinoma annandalei'' (Wheeler, 1928) *''Tapinoma antarcticum'' Forel, 1904 *''Tapinoma arnoldi'' Forel, 1913 *''Tapinoma atriceps'' Emery, 1888 *†''Tapinoma baculum'' Zhan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bothriomyrmex
''Bothriomyrmex'' is a genus of ants in the subfamily Dolichoderinae. Distribution and habitat The genus is widely distributed in the Old World and Australia, where it is found nesting in a wide range of habitats (including grasslands, savanna woodlands, mallee forests and lowland rainforest). They nest in soil or in rotten wood. Species *''Bothriomyrmex anastasiae'' Dubovikov, 2002 *''Bothriomyrmex atlantis'' Forel, 1894 *''Bothriomyrmex breviceps'' Santschi, 1919 *''Bothriomyrmex communistus'' Santschi, 1919 *''Bothriomyrmex corsicus'' Santschi, 1923 *'' Bothriomyrmex costae'' Emery, 1869 *''Bothriomyrmex crosi'' Santschi, 1919 *'' Bothriomyrmex cuculus'' Santschi, 1919 *''Bothriomyrmex decapitans'' Santschi, 1911 *''Bothriomyrmex emarginatus'' Santschi, 1919 *'' Bothriomyrmex jannonei'' Menozzi, 1936 *''Bothriomyrmex kusnezovi'' Emery, 1925 *''Bothriomyrmex laticeps'' Emery, 1925 *''Bothriomyrmex meridionalis'' (Roger, 1863) *'' Bothriomyrmex modestus'' Radchenko, 1985 *''B ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Petiole (insect Anatomy)
In entomology, petiole is the technical term for the narrow waist of some hymenopteran insects, especially ants, bees, and wasps in the suborder Apocrita. The petiole can consist of either one or two segments, a characteristic that separates major subfamilies of ants. Structure The term 'petiole' is most commonly used to refer to the constricted first (and sometimes second) metasomal (posterior) segment of members of the hymenopteran suborder Apocrita ( ants, bees, and wasps). It is sometimes also used to refer to other insects with similar body shapes, where the metasomal base is constricted. The petiole is occasionally called a pedicel, but in entomology, that term is more correctly reserved for the second segment of the antenna; while in arachnology, ' pedicel' is the accepted term to define the constriction between the cephalothorax and abdomen of spiders. The plump portion of the abdomen posterior to the petiole (and postpetiole in the Myrmicinae Myrmicinae i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Clypeus (arthropod Anatomy)
The clypeus is one of the sclerites that make up the face of an arthropod. In insects, the clypeus delimits the lower margin of the face, with the labrum articulated along the ventral margin of the clypeus. The mandibles bracket the labrum, but do not touch the clypeus. The dorsal margin of the clypeus is below the antennal sockets. The clypeus is often well-defined by sulci ("grooves") along its lateral and dorsal margins, and is most commonly rectangular or trapezoidal in overall shape. The post-clypeus is a large nose-like structure that lies between the eyes and makes up much of the front of the head in cicadas. In spiders, the clypeus is generally the area between the anterior edge of the carapace A carapace is a dorsal (upper) section of the exoskeleton or shell in a number of animal groups, including arthropods, such as crustaceans and arachnids, as well as vertebrates, such as turtles and tortoises. In turtles and tortoises, the und ... and the anterior eyes. R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of Taxonomy (biology), 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 reproduction, produce Fertility, fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology (biology), 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 binomial nomenclature, 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 specifi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mandible (insect Mouthpart)
Insect mandibles are a pair of appendages near the insect's mouth, and the most anterior of the three pairs of oral appendages (the labrum is more anterior, but is a single fused structure). Their function is typically to grasp, crush, or cut the insect's food, or to defend against predators or rivals. Insect mandibles, which appear to be evolutionarily derived from legs, move in the horizontal plane unlike those of vertebrates, which appear to be derived from gill arches and move vertically. Grasshoppers, crickets, and other simple insects The mouthparts of orthopteran insects are often used as a basic example of mandibulate (chewing) mouthparts, and the mandibles themselves are likewise generalized in structure. They are large and hardened, shaped like pinchers, with cutting surfaces on the distal portion and chewing or grinding surfaces basally. They are usually lined with teeth and move sideways. Large pieces of leaves can therefore be cut and then pulverized near the mouth ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
