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Pentagenia
''Pentagenia'', similar to Hexagenia, is a genus of insect in the family Ephemeridae, commonly referred to as burrowing mayflies. General information Unlike Hexagenia, which inhabit mostly lightly compacted silt substrates, most species of Pentagenia inhabit compacted clay substrates. They also prefer faster flowing streams than Hexagenia. This difference in habitat creates several morphological differences between the two genera. The mandibular tusks are used to excavate an open burrow in the substrate where the mayfly resides, therefore the size and strength of the head differs between the two genera in correlation to the different substrates in which they burrow. However, the best delineating feature between the two is that Pentagenia have a pointed frontal process with a minor cleft at the point.Keltner, J. and W. P. McCafferty. (1986). Functional morphology of burrowing in the mayflies Hexagenia limbata and Pentagenia vittigera. ''Zoological Journal of the Linnean Society'' ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentagenia Vittigera
''Pentagenia vittigera'' is a species of riverbed burrower mayfly in the family Palingeniidae Palingeniidae is a family of mayflies, members of which are known as spiny-headed burrowing mayflies. These are generally quite large mayflies with more than four longitudinal cross-veins on their wings. Males have short, wide pronotums and the .... It is found in North America. References Mayflies Articles created by Qbugbot Insects described in 1862 {{mayfly-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pentagenia Robusta
''Pentagenia robusta'', the robust burrowing mayfly, is a recently extinct species of mayfly in the family Ephemeridae. It was endemic to the United States, found in the states Indiana, Kentucky, and Ohio Ohio () is a state in the Midwestern region of the United States. Of the fifty U.S. states, it is the 34th-largest by area, and with a population of nearly 11.8 million, is the seventh-most populous and tenth-most densely populated. The sta .... It was known only from the Ohio River area and it was not described until 1926. This riverine species was probably sensitive to changes in river flow and water quality, especially increasing sedimentation as are many closely related species. References Mayflies Insects described in 1926 Extinct insects since 1500 Extinct animals of the United States Taxonomy articles created by Polbot {{mayfly-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hexagenia
''Hexagenia'' is a genus of mayfly in the family Ephemeridae, the common burrower mayflies. Species These eight species belong to the genus ''Hexagenia'': * '' Hexagenia albivitta'' (Walker, 1853) * '' Hexagenia atrocaudata'' McDunnough, 1924 * '' Hexagenia bilineata'' (Say, 1824) * '' Hexagenia callineura'' Banks, 1914 * '' Hexagenia limbata'' (Serville, 1829) * '' Hexagenia mexicana'' Eaton, 1885 * '' Hexagenia orlando'' Traver, 1931 * ''Hexagenia rigida'' McDunnough, 1924 Data sources: i = ITIS, c = Catalogue of Life, g = GBIF, b = Bugguide.net General information ''Hexagenia'' are commonly referred to as burrower mayflies as they create u-shaped tunnels in the aquatic substrate where they reside. This shape allows them to draw in water from the surrounding areas by undulating their body near the mouth of the tunnel. ''Hexagenia'' feed upon microscopic organisms suspended in the water column and thus draw in all the food and oxygen they require. Therefore, these burrowing may ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ephemeridae
Ephemeridae is a family of mayflies with about 150 described species found throughout the world except Australia and Oceania. These are generally quite large mayflies (up to 35 mm) with either two or three very long tails. Many species have distinctively patterned wings. Ephemerids breed in a wide range of waters, usually requiring a layer of silt as the nymphs have strong legs which are adapted for burrowing (the group is sometimes known as burrowing mayflies). The nymphs are largely carnivorous and collect their food either through predation or scavenging Scavengers are animals that consume dead organisms that have died from causes other than predation or have been killed by other predators. While scavenging generally refers to carnivores feeding on carrion, it is also a herbivorous feeding .... References *Chinery, Michael ''Collins Guide to the Insects of Britain and Western Europe'' 1986 (Reprinted 1991) * McGavin, George C. ''Insects and Spiders'' 2004Fa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mayfly Genera
Mayflies (also known as shadflies or fishflies in Canada and the upper Midwestern United States, as Canadian soldiers in the American Great Lakes region, and as up-winged flies in the United Kingdom) are aquatic insects belonging to the order Ephemeroptera. This order is part of an ancient group of insects termed the Palaeoptera, which also contains dragonflies and damselflies. Over 3,000 species of mayfly are known worldwide, grouped into over 400 genera in 42 families. Mayflies have ancestral traits that were probably present in the first flying insects, such as long tails and wings that do not fold flat over the abdomen. Their immature stages are aquatic fresh water forms (called "naiads" or "nymphs"), whose presence indicates a clean, unpolluted and highly oxygenated aquatic environment. They are unique among insect orders in having a fully winged terrestrial preadult stage, the subimago, which moults into a sexually mature adult, the imago. Mayflies "hatch" (emerge as ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insect
Insects (from Latin ') are pancrustacean hexapod invertebrates of the class Insecta. They are the largest group within the arthropod phylum. Insects have a chitinous exoskeleton, a three-part body ( head, thorax and abdomen), three pairs of jointed legs, compound eyes and one pair of antennae. Their blood is not totally contained in vessels; some circulates in an open cavity known as the haemocoel. Insects are the most diverse group of animals; they include more than a million described species and represent more than half of all known living organisms. The total number of extant species is estimated at between six and ten million; In: potentially over 90% of the animal life forms on Earth are insects. Insects may be found in nearly all environments, although only a small number of species reside in the oceans, which are dominated by another arthropod group, crustaceans, which recent research has indicated insects are nested within. Nearly all insects hatch from eggs. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
