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Water Scorpion
Nepidae is a family of exclusively aquatic Heteropteran insects in the order Hemiptera. They are commonly called water scorpions for their superficial resemblance to scorpions, due to their raptorial forelegs and the presence of a long slender process at the posterior end of the abdomen, resembling a tail. There are 14 genera in the family, in two subfamilies, Nepinae and Ranatrinae. Members of the genus ''Ranatra'', the most widespread and species-rich genus, are sometimes called needle bugs or water stick insects as they are slenderer than ''Nepa (bug), Nepa''. While water scorpions do not sting with their tail (it is used for breathing), they do have a painful bite (strictly speaking a sting by their pointed proboscis), but this is much less harmful to humans than a true scorpion's sting. Range and habitat Nepidae are found on all continents except Antarctica. They mostly inhabit stagnant or slow-moving freshwater habitats like ponds, marshes, canals and streams. Exceptionall ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepa Cinerea
''Nepa cinerea'' is a species of water scorpion ( Nepidae), found in most of Europe, including the British Isles, as well as North Africa and southern and northern Asia. Habitat and biology It lives in ponds, small rivers, and stagnant water, and feeds upon aquatic animals, especially insects. Respiration in the adult is effected by means of the caudal process, which consists of a pair of half-tubes capable of being locked together to form a siphon by means of which air is conducted to the tracheae at the apex of the abdomen The abdomen (colloquially called the gut, belly, tummy, midriff, tucky, or stomach) is the front part of the torso between the thorax (chest) and pelvis in humans and in other vertebrates. The area occupied by the abdomen is called the abdominal ... when the tip of the tube is thrust above the surface of the water. In immature forms, the siphon is undeveloped and breathing takes place through six pairs of abdominal spiracles. The eggs, laid in th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nepa Cinerea, Ангарск, Иркутская обл
The National Environmental Policy Act (NEPA) is a United States environmental law designed to promote the enhancement of the environment. It created new laws requiring U.S. federal government agencies to evaluate the environmental impacts of their actions and decisions, and it established the President's Council on Environmental Quality (CEQ). The Act was passed by the U.S. Congress in December 1969 and signed into law by President Richard Nixon on January 1, 1970.United States. National Environmental Policy Act of 1969. , Approved January 1, 1970. ''et seq.'' More than 100 nations around the world have enacted national environmental policies modeled after NEPA. NEPA requires Federal agencies to evaluate the environmental effects of their actions. NEPA's most significant outcome was the requirement that all executive Federal agencies prepare environmental assessments (EAs) and environmental impact statements (EISs). These reports state the potential environmental effects of p ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cercotmetus
''Cercotmetus'' is a genus of water Heteroptera, bugs in the subfamily Ranatrinae ("water stick-insects"). The recorded distribution of this genus is from is from mainland Asia to New Guinea and northern Australia. Description ''Cercotmetus'' species are similar to the related genus ''Ranatra'', but have distinctly shorter respiratory siphons (posterior breathing tubes, which are ¼ or less of the body length) and the front Arthropod leg#Femur, femur is shorter than length of the pronotum. Species The Global Biodiversity Information Facility lists: # ''Cercotmetus asiaticus'' Amyot & Serville, 1843 - type species # ''Cercotmetus brevipes'' Montandon, 1909 # ''Cercotmetus compositus'' Montandon, 1903 # ''Cercotmetus dissidens'' Montandon, 1911 # ''Cercotmetus fumosus'' Distant, 1904 # ''Cercotmetus horni'' Montandon, 1911 # ''Cercotmetus minutus'' Keffer & J.Polhemus, 1999 # ''Cercotmetus pilipes'' (Dallas, 1850) # ''Cercotmetus robustus'' Montandon, 1911 # ''Cercotmetus strangu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ranatra Chinensis
''Ranatra'' is a genus of slender predatory insects of the family Nepidae, known as Water mantis, water scorpions or water stick-insects. There are more than 140 ''Ranatra'' species found in freshwater habitats around the world, both in warm and temperate regions, with the highest diversity in South America (almost 50 species) and Asia (about 30 species, reviewed in 1972Lansbury I (1972) A review of the Oriental species of ''Ranatra'' Fabricius (Hemiptera-Heteroptera: Nepidae). ''Transactions of the Royal Entomological Society of London'', vol. 124, no. 3. 287-341.). Fewer are found elsewhere, but include several African, some in North America, three from Australia and three from the Palearctic, notably the relatively well-known European ''Ranatra linearis, R. linearis''. Since ''Ranatra'' belongs to the family Nepidae which in turn belongs to the order Hemiptera, ''Ranatra'' are considered "true bugs". These brown insects are primarily found in stagnant or slow-moving water like ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Crato Formation
The Crato Formation is a geologic formation (stratigraphy), formation of Early Cretaceous (Aptian) age in northeastern Brazil's Araripe Basin. It is an important Lagerstätten, Lagerstätte (undisturbed fossil accumulation) for palaeontology, palaeontologists. The strata were laid down mostly during the Aptian age (geology), age, about 113 million years ago. It thought to have been deposited in a semi-arid Lake, lacustrine wetland environment.Ribeiro et al., 2021 The Crato Formation earns the designation of Lagerstätte due to an exceedingly well preserved and diverse fossil faunal assemblage. Some 25 species of fossil fishes are often found with stomach contents preserved, enabling paleontologists to study predator-prey relationships in this ecosystem. There are also fine examples of pterosaurs, reptiles and amphibians, invertebrates (particularly insects), and plants. Even dinosaurs are represented: a new maniraptor was described in 1996. The unusual taphonomy of the site resul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aptian
The Aptian is an age (geology), age in the geologic timescale or a stage (stratigraphy), stage in the stratigraphic column. It is a subdivision of the Early Cretaceous, Early or Lower Cretaceous epoch (geology), Epoch or series (stratigraphy), Series and encompasses the time from 121.4 ± 1.0 annum, Ma to 113.0 ± 1.0 Ma (million years ago), approximately. The Aptian succeeds the Barremian and precedes the Albian, all part of the Lower/Early Cretaceous. The Aptian partly overlaps the upper part of the Western Europe, Western European Urgonian Stage. The Selli Event, also known as OAE1a, was one of two oceanic anoxic events in the Cretaceous Period, which occurred around 120 annum, Ma and lasted approximately 1 to 1.3 million years, being marked by enhanced silicate weathering, as well as ocean acidification. The Aptian extinction was a minor extinction event hypothesized to have occurred around 116 to 117 Ma. Stratigraphic definitions The Aptian was named after the small city o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ethiopia
Ethiopia, officially the Federal Democratic Republic of Ethiopia, is a landlocked country located in the Horn of Africa region of East Africa. It shares borders with Eritrea to the north, Djibouti to the northeast, Somalia to the east, Kenya to the south, South Sudan to the west, and Sudan to the northwest. Ethiopia covers a land area of . , it has around 128 million inhabitants, making it the List of countries and dependencies by population, thirteenth-most populous country in the world, the List of African countries by population, second-most populous in Africa after Nigeria, and the most populous landlocked country on Earth. The national capital and largest city, Addis Ababa, lies several kilometres west of the East African Rift that splits the country into the African Plate, African and Somali Plate, Somali tectonic plates. Early modern human, Anatomically modern humans emerged from modern-day Ethiopia and set out for the Near East and elsewhere in the Middle Paleolithi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Subfamily (biology)
In biological classification, a subfamily (Latin: ', plural ') is an auxiliary (intermediate) taxonomic rank, next below family but more inclusive than genus. Standard nomenclature rules end botanical subfamily names with "-oideae", and zoological subfamily names with "-inae". Detarioideae is an example of a botanical subfamily. Detarioideae is a subdivision of the family Fabaceae (legumes), containing 84 genera. Stevardiinae is an example of a zoological subfamily. Stevardiinae is a large subdivision of the family Characidae, a diverse clade of freshwater fish. See also * International Code of Nomenclature for algae, fungi, and plants * International Code of Zoological Nomenclature The International Code of Zoological Nomenclature (ICZN) is a widely accepted Convention (norm), convention in zoology that rules the formal scientific name, scientific naming of organisms treated as animals. It is also informally known as the I ... * Rank (botany) * Rank (zoology) R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Genera
Genus (; : genera ) is a taxonomic rank above species and below family as used in the biological classification of living and fossil organisms as well as viruses. In binomial nomenclature, the genus name forms the first part of the binomial species name for each species within the genus. :E.g. '' Panthera leo'' (lion) and '' Panthera onca'' (jaguar) are two species within the genus '' Panthera''. ''Panthera'' is a genus within the family Felidae. The composition of a genus is determined by taxonomists. The standards for genus classification are not strictly codified, so different authorities often produce different classifications for genera. There are some general practices used, however, including the idea that a newly defined genus should fulfill these three criteria to be descriptively useful: # monophyly – all descendants of an ancestral taxon are grouped together (i.e. phylogenetic analysis should clearly demonstrate both monophyly and validity as a separate lineag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
