Chrysotoxum Perplexum

	Chrysotoxum Perplexum ''Chrysotoxum perplexum'' is a North American species of syrphid fly Hover flies, also called flower flies or syrphid flies, make up the insect family Syrphidae. As their common name suggests, they are often seen hovering or nectaring at flowers; the adults of many species feed mainly on nectar and pollen, while ... in the family Syrphidae.The adults are strong mimics of wasps. Larvae of this genera, when known, are aphid predators. Description For terminology seSpeight key to genera and glossary ;Length ;Head: The face is convex with a prominent tubercule at the lower end of the facial stripe. The vertex and front are black, with the upper part of the front being whitish pollinose. The first joint of the antennae is longer than the second, and the third is slightly longer than the first and second combined. Lastly, the arista is reddish. ;Thorax: The scutellum has a broad transverse black band, leaving a narrow yellow margin at the base and apex. ;Abdomen: The sides ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
	Charles Willison Johnson Charles Willison Johnson (October 26, 1863 – July 19, 1932) was an American naturalist who specialized in entomology (especially Diptera) and malacology, making significant contributions in both fields. He was a mentor and inspiration to many students and young scientists such as William J. Clench (who founded a publication named '' Johnsonia'' in his honor). Johnson was Curator of the Wagner Free Institute of Science, 1888–1903, then was Principal Curator at the Boston Society of Natural History, 1903–1932. He assisted Henry Augustus Pilsbry with '' The Nautilus'', an important American malacological publication. Although both were credited on the title page as "Editors and Publishers", Johnson was the business manager and Pilsbry was the editor, with Johnson acting as editor when Pilsbry was on extended field expeditions. Biography Charles Johnson was born to Albert Fletcher Johnson and Sarah Willison Johnson in Morris Plains, New Jersey. He attended public and private ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Syrphid Fly Hover flies, also called flower flies or syrphid flies, make up the insect family Syrphidae. As their common name suggests, they are often seen hovering or nectaring at flowers; the adults of many species feed mainly on nectar and pollen, while the larvae (maggots) eat a wide range of foods. In some species, the larvae are saprotrophs, eating decaying plant and animal matter in the soil or in ponds and streams. In other species, the larvae are insectivores and prey on aphids, thrips, and other plant-sucking insects. Insects such as aphids are considered a crop pest, and therefore the aphid-eating larvae of some hover flies serve as an economically (as well as ecologically) important predator and even potential agents for use in biological control, while the adults may be pollinators. About 6,000 species in 200 genera have been described. Hover flies are common throughout the world and can be found on all continents except Antarctica. Hover flies are harmless to most mammals, th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Syrphini The Syrphini are a tribe of hoverflies. List of genera Relationships within this tribe were investigated by analysing and comparing genetic data. Results seem to show the members of Syrphini fall into several smaller groups or clades. ''Afrosyrphus'' Curran, 1927 '' Agnisyrphus'' Ghorpade, 1994 '' Allobacha'' Curran, 1928 '' Allograpta'' Osten Sacken, 1875. Subgenera: ''A. (Allograpta)'', ''A. (Antillus)'', ''A. (Claraplumula)'', ''A. (Costarica)'', ''A. (Fazia)'', ''A. (Rhinoprosopa)'' ''Anu'' Thompson, 2008 ''Asarkina'' Macquart, 1834. Subgenera: ''A. (Achoanus)'', ''A. (Asarkina)'' '' Asiodidea'' Stackelberg, 1930 ''Betasyrphus'' Matsumura, 1917 '' Chrysotoxum'' Meigen, 1803 '' Citrogramma'' Vockeroth, 1969 ''Dasysyrphus'' Enderlein, 1938 ''Didea'' Macquart, 1834 '' Dideomima'' Vockeroth, 1969 '' Dideoides'' Brunetti, 1908 ''Dideopsis'' Matsumura, 1917 '' Doros'' Meigen, 1803 '' Eosphaerophoria'' Frey, 1946 ''Epistrophe'' Walker, 1852 '' Epist ... [...More Info...] [...Related Items...] OR:* [Wikipedia] [Google] [Baidu]
	Articles Created By Qbugbot Article often refers to: * Article (grammar), a grammatical element used to indicate definiteness or indefiniteness * Article (publishing), a piece of nonfictional prose that is an independent part of a publication Article may also refer to: Government and law * Article (European Union), articles of treaties of the European Union * Articles of association, the regulations governing a company, used in India, the UK and other countries * Articles of clerkship, the contract accepted to become an articled clerk * Articles of Confederation, the predecessor to the current United States Constitution Article of Impeachment, a formal document and charge used for impeachment in the United States Articles of incorporation, for corporations, U.S. equivalent of articles of association * Articles of organization, for limited liability organizations, a U.S. equivalent of articles of association Other uses * Article, an HTML element, delimited by the tags and * Article of clothing, an i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Insects Described In 1924 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]
picture info	Taxa Named By Charles Willison Johnson In biology, a taxon (back-formation from ''taxonomy''; plural taxa) is a group of one or more populations of an organism or organisms seen by taxonomists to form a unit. Although neither is required, a taxon is usually known by a particular name and given a particular ranking, especially if and when it is accepted or becomes established. It is very common, however, for taxonomists to remain at odds over what belongs to a taxon and the criteria used for inclusion. If a taxon is given a formal scientific name, its use is then governed by one of the nomenclature codes specifying which scientific name is correct for a particular grouping. Initial attempts at classifying and ordering organisms (plants and animals) were set forth in Carl Linnaeus's system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of biological classification was first made widely available in 1805 in the intr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]
picture info	Diptera Of North America Flies are insects of the order Diptera, the name being derived from the Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advanced mechanosensory organs known as halteres, which act as high-speed sensors of rotational movement and allow dipterans to perform advanced aerobatics. Diptera is a large order containing an estimated 1,000,000 species including horse-flies, crane flies, hoverflies and others, although only about 125,000 species have been described. Flies have a mobile head, with a pair of large compound eyes, and mouthparts designed for piercing and sucking (mosquitoes, black flies and robber flies), or for lapping and sucking in the other groups. Their wing arrangement gives them great maneuverability in flight, and claws and pads on their feet enable them to cling to smooth surfaces. Flies undergo complete metamorphosis; the eggs are often laid on the la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu]