|
Richardia Telescopica
''Richardia telescopica'' is a species of flies from the genus ''Richardia''. The species was originally described by Gerstaecker in 1860 and it occurs in Nicaragua, Costa Rica, and Panama. Description ''R. telescopica'' presents an extreme form of sexual dimorphism. Males of ''Richardia telescopica'' display characteristic "eyestalks", a form of hypercephaly—an exaggerated lateral extension of the eyes away from the head—whereas females show limited hypercephaly. Hypercephaly evolved in several insect orders, including Hymenoptera, Heteroptera, and Diptera and has arisen at least 21 times among flies. Other species in genus ''Richardia'' with hypercephaly as a dimorphic trait include ''Richardia stylops ''Richardia'' (Mexican-clover) is a genus of about fifteen species of flowering plants in the family Rubiaceae. They are native to tropical to warm, temperate regions of the Americas, with one species also native to Fiji. They are mostly annua ...'' and ''Richardi ... [...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] |
Richardia (fly)
''Richardia'' is a genus of flies in the family Richardiidae. It was first described by French entomologist Jean-Baptiste Robineau-Desvoid in 1830. It occurs from Mexico to Central and South America. Description The genus includes species with strongly enlarged heads (hypercephalism) and "eyestalks" (eyes inserted in the lateral projection of the head) such as the males '' R. telescopica'' and '' R. stylops''. Stalk-eyed flies in family Diopsidae Stalk-eyed flies are insects of the fly family Diopsidae. The family is distinguished from most other flies by most members of the family possessing "eyestalks": projections from the sides of the head with the eyes at the end. Some fly species fr ... have their antennae located on the stalk, rather than in the middle of the head as in Richardiidae. Taxonomy The ''Richardia'' genus comprises the following species: * ''Richardia advena'' * ''Richardia analis'' Hendel, 1911 * ''Richardia annulata'' (Macquart, 1835 * ''Richa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Carl Eduard Adolph Gerstaecker
Carl Eduard Adolph Gerstaecker (30 August 1828 – 20 June 1895) was a German zoologist, entomologist and professor at the University of Berlin and then the University of Greifswald. Biography Gerstaecker was born in Berlin, where he studied medicine and natural sciences, receiving his PhD in 1855 as a student of Johann Christoph Friedrich Klug. In 1856 he obtained his habilitation for zoology, and soon afterwards, became a curator at the Zoological Museum of Humboldt University. In 1864 he began work as a lecturer at the Landwirtschaftlichen Lehranstalt (Agricultural Educational Facility) in Berlin. In 1874 he became an associate professor for zoology at the University of Berlin, and in 1876, a professor of zoology at the University of Greifswald. He died in Greifswald. Works * ''Monographie der Endomychiden'' (1858) – Monograph on Endomychidae. * ''Handbuch der Zoologie'' (with Wilhelm Peters und Julius Victor Carus), Leipzig (1863-1875). * (Arthropoda) * Arthr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
1860
Events January–March * January 2 – The discovery of a hypothetical planet Vulcan is announced at a meeting of the French Academy of Sciences in Paris, France. * January 10 – The Pemberton Mill in Lawrence, Massachusetts collapses, killing 146 workers. * January 13 – Battle of Tétouan, Morocco: Spanish troops under General Leopoldo O'Donnell, 1st Duke of Tetuan defeat the Moroccan Army. * January 20 – Camillo Benso, Count of Cavour is recalled as Prime Minister of Piedmont-Sardinia. * January 31 – Kukis raid the Chhagalnaiya plains in eastern Bengal, murdering and kidnapping hundreds of people, particularly women. * February 20 – Canadian Royal Mail steamer (1859) is wrecked on Cape Sable Island, Nova Scotia, on passage from the British Isles to the United States with all 205 onboard lost. * February 26 – White settlers massacre a band of Wiyot Indians on Indian Island, near Eureka, California. At least 60 women, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richardia Telescopica Gerstaecker, 1860 1988351533
''Richardia'' (Mexican-clover) is a genus of about fifteen species of flowering plants in the family Rubiaceae. They are native to tropical to warm, temperate regions of the Americas, with one species also native to Fiji. They are mostly annual plants, though a few species are herbaceous perennial plants. ;Selected species *''Richardia brasiliensis''. Guyana and Brazil south to northern Argentina. *''Richardia grandiflora''. Brazil. *''Richardia scabra''. Southeastern United States south to Peru. *''Richardia tricocco''. Southern Louisiana and Texas south to central Mexico. ---- ''Richardia'' Kunth non L. is a synonym of the genus ''Zantedeschia'' in the family Araceae The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). .... References Germplasm Resources Information Network: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where the sexes of the same animal and/or plant species exhibit different morphological characteristics, particularly characteristics not directly involved in reproduction. The condition occurs in most animals and some plants. Differences may include secondary sex characteristics, size, weight, colour, markings, or behavioural or cognitive traits. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', which is when both biological sexes are phenotypically indistinguishable from each other. Overview Ornamentation and coloration Common and easily identified types of dimorphism consist of ornamentation and coloration, though not always apparent. A difference in coloration of sexes within a given species is called sexual dichromatism, which is commonly seen in many species of birds and reptiles. Sexual selection leads to the exaggerat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hymenoptera
Hymenoptera is a large order of insects, comprising the sawflies, wasps, bees, and ants. Over 150,000 living species of Hymenoptera have been described, in addition to over 2,000 extinct ones. Many of the species are parasitic. Females typically have a special ovipositor for inserting eggs into hosts or places that are otherwise inaccessible. This ovipositor is often modified into a stinger. The young develop through holometabolism (complete metamorphosis)—that is, they have a wormlike larval stage and an inactive pupal stage before they mature. Etymology The name Hymenoptera refers to the wings of the insects, but the original derivation is ambiguous. All references agree that the derivation involves the Ancient Greek πτερόν (''pteron'') for wing. The Ancient Greek ὑμήν (''hymen'') for membrane provides a plausible etymology for the term because species in this order have membranous wings. However, a key characteristic of this order is that the hindwings are co ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteroptera
The Heteroptera are a group of about 40,000 species of insects in the order Hemiptera. They are sometimes called "true bugs", though that name more commonly refers to the Hemiptera as a whole. "Typical bugs" might be used as a more unequivocal alternative, since the heteropterans are most consistently and universally termed "bugs" among the Hemiptera. "Heteroptera" is Greek for "different wings": most species have forewings with both membranous and hardened portions (called hemelytra); members of the primitive sub-group Enicocephalomorpha have completely membranous wings. The name "Heteroptera" is used in two very different ways in modern classifications. In Linnean nomenclature, it commonly appears as a suborder within the order Hemiptera, where it can be paraphyletic or monophyletic depending on its delimitation. In phylogenetic nomenclature, it is used as an unranked clade within the Prosorrhyncha clade, which in turn is in the Hemiptera clade. This results from the realiza ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diptera
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 l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richardia Stylops
''Richardia'' (Mexican-clover) is a genus of about fifteen species of flowering plants in the family Rubiaceae. They are native to tropical to warm, temperate regions of the Americas, with one species also native to Fiji. They are mostly annual plants, though a few species are herbaceous perennial plants. ;Selected species *''Richardia brasiliensis''. Guyana and Brazil south to northern Argentina. *''Richardia grandiflora''. Brazil. *''Richardia scabra''. Southeastern United States south to Peru. *''Richardia tricocco''. Southern Louisiana and Texas south to central Mexico. ---- ''Richardia'' Kunth non L. is a synonym of the genus ''Zantedeschia'' in the family Araceae The Araceae are a family of monocotyledonous flowering plants in which flowers are borne on a type of inflorescence called a spadix. The spadix is usually accompanied by, and sometimes partially enclosed in, a spathe (or leaf-like bract). .... References Germplasm Resources Information Network: ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Described In 1860
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 int ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
_(10144905255).jpg "Click for more on -> Diptera")
