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Paelobiidae
''Hygrobia'' is a genus of aquatic beetles native to Europe, North Africa, China and Australia. It is the only genus in the family Hygrobiidae, also known as the Paelobiidae.Nilsson, A. N. (2006)Which name is valid – Hygrobiidae or Paelobiidae?''Latissimus'' 21 37–39. These are known commonly as squeak beetles or screech-beetles. There are six known living species, with a highly disjunct distribution, and one extinct species, ''Hygrobia cretzschmari''. Biology All species occur in lowland areas Dettner, K. (2005). Noteridae. ''Handbook of Zoology'', ''4'', 72–90. and are mainly found in stagnant water.Holmen, M. (1987). Family Hygrobiidae. ''The aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark''. Brill, 136–142. They live in the mud, silt, and detritus of ponds. None of the species occur in sympatry, except for ''H. nigra'' and ''H. australasiae'' in south-eastern Australia.Hawlitschek, O., Hendrich, L., & Balke, M. (2012). Molecular phylogeny of the squeak b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygrobia Maculata
''Hygrobia'' is a genus of aquatic beetles native to Europe, North Africa, China and Australia. It is the only genus in the family Hygrobiidae, also known as the Paelobiidae.Nilsson, A. N. (2006)Which name is valid – Hygrobiidae or Paelobiidae?''Latissimus'' 21 37–39. These are known commonly as squeak beetles or screech-beetles. There are six known living species, with a highly disjunct distribution, and one extinct species, ''Hygrobia cretzschmari''. Biology All species occur in lowland areas Dettner, K. (2005). Noteridae. ''Handbook of Zoology'', ''4'', 72–90. and are mainly found in stagnant water.Holmen, M. (1987). Family Hygrobiidae. ''The aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark''. Brill, 136–142. They live in the mud, silt, and detritus of ponds. None of the species occur in sympatry, except for ''H. nigra'' and ''H. australasiae'' in south-eastern Australia.Hawlitschek, O., Hendrich, L., & Balke, M. (2012). Molecular phylogeny of the squeak b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygrobia Australasiae
''Hygrobia'' is a genus of aquatic beetles native to Europe, North Africa, China and Australia. It is the only genus in the family Hygrobiidae, also known as the Paelobiidae.Nilsson, A. N. (2006)Which name is valid – Hygrobiidae or Paelobiidae?''Latissimus'' 21 37–39. These are known commonly as squeak beetles or screech-beetles. There are six known living species, with a highly disjunct distribution, and one extinct species, ''Hygrobia cretzschmari''. Biology All species occur in lowland areas Dettner, K. (2005). Noteridae. ''Handbook of Zoology'', ''4'', 72–90. and are mainly found in stagnant water.Holmen, M. (1987). Family Hygrobiidae. ''The aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark''. Brill, 136–142. They live in the mud, silt, and detritus of ponds. None of the species occur in sympatry, except for ''H. nigra'' and ''H. australasiae'' in south-eastern Australia.Hawlitschek, O., Hendrich, L., & Balke, M. (2012). Molecular phylogeny of the squeak b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygrobia Wattsi
''Hygrobia'' is a genus of aquatic beetles native to Europe, North Africa, China and Australia. It is the only genus in the family Hygrobiidae, also known as the Paelobiidae.Nilsson, A. N. (2006)Which name is valid – Hygrobiidae or Paelobiidae?''Latissimus'' 21 37–39. These are known commonly as squeak beetles or screech-beetles. There are six known living species, with a highly disjunct distribution, and one extinct species, ''Hygrobia cretzschmari''. Biology All species occur in lowland areas Dettner, K. (2005). Noteridae. ''Handbook of Zoology'', ''4'', 72–90. and are mainly found in stagnant water.Holmen, M. (1987). Family Hygrobiidae. ''The aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark''. Brill, 136–142. They live in the mud, silt, and detritus of ponds. None of the species occur in sympatry, except for ''H. nigra'' and ''H. australasiae'' in south-eastern Australia.Hawlitschek, O., Hendrich, L., & Balke, M. (2012). Molecular phylogeny of the squeak b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygrobia Nigra
''Hygrobia'' is a genus of aquatic beetles native to Europe, North Africa, China and Australia. It is the only genus in the family Hygrobiidae, also known as the Paelobiidae.Nilsson, A. N. (2006)Which name is valid – Hygrobiidae or Paelobiidae?''Latissimus'' 21 37–39. These are known commonly as squeak beetles or screech-beetles. There are six known living species, with a highly disjunct distribution, and one extinct species, ''Hygrobia cretzschmari''. Biology All species occur in lowland areas Dettner, K. (2005). Noteridae. ''Handbook of Zoology'', ''4'', 72–90. and are mainly found in stagnant water.Holmen, M. (1987). Family Hygrobiidae. ''The aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark''. Brill, 136–142. They live in the mud, silt, and detritus of ponds. None of the species occur in sympatry, except for ''H. nigra'' and ''H. australasiae'' in south-eastern Australia.Hawlitschek, O., Hendrich, L., & Balke, M. (2012). Molecular phylogeny of the squeak b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hygrobia Davidi
''Hygrobia'' is a genus of aquatic beetles native to Europe, North Africa, China and Australia. It is the only genus in the family Hygrobiidae, also known as the Paelobiidae.Nilsson, A. N. (2006)Which name is valid – Hygrobiidae or Paelobiidae?''Latissimus'' 21 37–39. These are known commonly as squeak beetles or screech-beetles. There are six known living species, with a highly disjunct distribution, and one extinct species, ''Hygrobia cretzschmari''. Biology All species occur in lowland areas Dettner, K. (2005). Noteridae. ''Handbook of Zoology'', ''4'', 72–90. and are mainly found in stagnant water.Holmen, M. (1987). Family Hygrobiidae. ''The aquatic Adephaga (Coleoptera) of Fennoscandia and Denmark''. Brill, 136–142. They live in the mud, silt, and detritus of ponds. None of the species occur in sympatry, except for ''H. nigra'' and ''H. australasiae'' in south-eastern Australia.Hawlitschek, O., Hendrich, L., & Balke, M. (2012). Molecular phylogeny of the squeak b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amphizoidae
''Amphizoa'' is a genus of aquatic beetles in the suborder Adephaga, placed in its own monogeneric family, Amphizoidae.''Amphizoa'' LeConte 1853. Illinois Natural History Survey. There are five known species of ''Amphizoa'', three in western North America and two in the eastern .Nilsson, Anders N., and Bernhard J. van Vondel (2005), World Catalogue of Insects. Volume 7: Amphizoidae, Aspidytidae, Haliplidae, Noteridae and Paelobiidae (Coleoptera, Adephaga) They are sometimes referred to by the common name troutstream beetles. Description Troutstream beetles have a characteristic appearance. They ar ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aspidytidae
Aspidytidae is a family of aquatic beetles of the suborder Adephaga, described in 2002 from specimens in South Africa and China. There are only two known species in the family and these were originally described in the genus ''Aspidytes,''Beutel, R.G., Balke, M. & Ribera, I. (2016) 7.7. Aspidytidae Ribera,Beutel, Balke and Vogler, 2002. In: Beutel, R.G. & Leschen, R.A.B. (eds.): ''"Handbook of Zoology, Arthropoda: Insecta. Coleoptera, Beetles. Vol. 1: Morphology and Systematics"'' (Archostemata, Adephaga, Myxophaga, Polyphaga partim). 2nd Edition. Walter de Gruyter, Berlin. pp. 141-149. but later the new genus ''Sinaspidytes'' was erected for the species found in China''.'' The family can also be referred to by its trivial name cliff water beetles. Description Cliff water beetles have a streamlined body that is dorsally convex. Their size ranges from 4.8 - 7.0 mm in length. Dorsal side is predominantly black and cuticle is shiny. The head is laterally rounded and shortened wit ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monophyly
In cladistics for a group of organisms, monophyly is the condition of being a clade—that is, a group of taxa composed only of a common ancestor (or more precisely an ancestral population) and all of its lineal descendants. Monophyletic groups are typically characterised by shared derived characteristics ( synapomorphies), which distinguish organisms in the clade from other organisms. An equivalent term is holophyly. The word "mono-phyly" means "one-tribe" in Greek. Monophyly is contrasted with paraphyly and polyphyly as shown in the second diagram. A ''paraphyletic group'' consists of all of the descendants of a common ancestor minus one or more monophyletic groups. A '' polyphyletic group'' is characterized by convergent features or habits of scientific interest (for example, night-active primates, fruit trees, aquatic insects). The features by which a polyphyletic group is differentiated from others are not inherited from a common ancestor. These definitions have taken ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antenna (biology)
Antennae ( antenna), sometimes referred to as "feelers", are paired appendages used for sensing in arthropods. Antennae are connected to the first one or two segments of the arthropod head. They vary widely in form but are always made of one or more jointed segments. While they are typically sensory organs, the exact nature of what they sense and how they sense it is not the same in all groups. Functions may variously include sensing touch, air motion, heat, vibration (sound), and especially smell or taste. Antennae are sometimes modified for other purposes, such as mating, brooding, swimming, and even anchoring the arthropod to a substrate. Larval arthropods have antennae that differ from those of the adult. Many crustaceans, for example, have free-swimming larvae that use their antennae for swimming. Antennae can also locate other group members if the insect lives in a group, like the ant. The common ancestor of all arthropods likely had one pair of uniramous (unbranched ... [...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] |
Sister Group
In phylogenetics, a sister group or sister taxon, also called an adelphotaxon, comprises the closest relative(s) of another given unit in an evolutionary tree. Definition The expression is most easily illustrated by a cladogram: Taxon A and taxon B are sister groups to each other. Taxa A and B, together with any other extant or extinct descendants of their most recent common ancestor (MRCA), form a monophyletic group, the clade AB. Clade AB and taxon C are also sister groups. Taxa A, B, and C, together with all other descendants of their MRCA form the clade ABC. The whole clade ABC is itself a subtree of a larger tree which offers yet more sister group relationships, both among the leaves and among larger, more deeply rooted clades. The tree structure shown connects through its root to the rest of the universal tree of life. In cladistic standards, taxa A, B, and C may represent specimens, species, genera, or any other taxonomic units. If A and B are at the same taxonomic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dytiscidae
The Dytiscidae – based on the Greek ''dytikos'' (δυτικός), "able to dive" – are the predaceous diving beetles, a family of water beetles. They occur in virtually any freshwater habitat around the world, but a few species live among leaf litter. The adults of most are between long, though much variation is seen between species. The European ''Dytiscus latissimus'' and Brazilian ''Megadytes ducalis'' are the largest, reaching up to and respectively. In contrast, the smallest is likely the Australian ''Limbodessus atypicali'' of subterranean waters, which only is about long. Most are dark brown, blackish, or dark olive in color with golden highlights in some subfamilies. The larvae are commonly known as water tigers due to their voracious appetite. They have short, but sharp mandibles and immediately upon biting, they deliver digestive enzymes into prey to suck their liquefied remains. The family includes more than 4,000 described species in numerous genera. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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