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Rabdophaga Exsiccans
''Rabdophaga exsiccans'' is a gall midge. It was first described by Ewald Heinrich Rübsaamen in 1916. The larvae tunnel in the shoots of creeping willow (''Salix repens ''Salix repens'', the creeping willow, is a small, shrubby species of willow in the family Salicaceae, growing up to 1.5metres in height. Found amongst sand dunes and heathlands, it is a polymorphic species, with a wide range of variants. In ...'') and may cause the shoots to swell slightly. Description The orange or red larvae live under the bark of shoots. Before the larvae pupate they make emergence holes which may be the only indication of their presence. Shoots with larvae die off. References exsiccans Nematoceran flies of Europe Gall-inducing insects Insects described in 1916 Taxa named by Ewald Heinrich Rübsaamen Willow galls {{Bibionomorpha-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cecidomyiidae
Cecidomyiidae is a family of flies known as gall midges or gall gnats. As the name implies, the larvae of most gall midges feed within plant tissue, creating abnormal plant growths called galls. Cecidomyiidae are very fragile small insects usually only in length; many are less than long. They are characterised by hairy wings, unusual in the order Diptera, and have long antennae. Some Cecidomyiids are also known for the strange phenomenon of paedogenesis in which the larval stage reproduces without maturing first. In some species, the daughter larvae consume the mother, while in others, reproduction occurs later on in the egg or pupa. More than 6,650 species and 830 genera are described worldwide, though this is certainly an underestimate of the actual diversity of this family. A DNA barcoding study published in 2016 estimated the fauna of Canada alone to be in excess of 16,000 species, hinting at a staggering global count of over 1 million cecidomyiid species that have yet ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Repens
''Salix repens'', the creeping willow, is a small, shrubby species of willow in the family Salicaceae, growing up to 1.5metres in height. Found amongst sand dunes and heathlands, it is a polymorphic species, with a wide range of variants. In the UK, at least, these range from small, prostrate, hairless plants at one end of the spectrum to taller, erect or ascending silky-leaved shrubs at the other. This wide variation in form has resulted in numerous synonyms. Distribution The plant has a Eurosiberian Boreo-temperate range, and is widely distributed around the coasts of western and northern Europe. In the UK, the prostrate forms (ssp. ''argentea'' and ssp. ''repens'') are characteristically found on sand dunes, growing close to the water table in dune slacks, as well as in coastal heaths and acid grassland, as well as being found further inland on heaths and moorland. The erect form (var. ''fusca'') occurs in fens. The species becomes more confined to moist or wet habitats ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gall
Galls (from the Latin , 'oak-apple') or ''cecidia'' (from the Greek , anything gushing out) are a kind of swelling growth on the external tissues of plants, fungi, or animals. Plant galls are abnormal outgrowths of plant tissues, similar to benign tumors or warts in animals. They can be caused by various parasites, from viruses, fungi and bacteria, to other plants, insects and mites. Plant galls are often highly organized structures so that the cause of the gall can often be determined without the actual agent being identified. This applies particularly to some insect and mite plant galls. The study of plant galls is known as cecidology. In human pathology, a gall is a raised sore on the skin, usually caused by chafing or rubbing. Causes of plant galls Insects and mites Insect galls are the highly distinctive plant structures formed by some herbivorous insects as their own microhabitats. They are plant tissue which is controlled by the insect. Galls act as both the habitat a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabdophaga
''Rabdophaga'' is genus of flies in the family of gall midges Cecidomyiidae. There are 105 species distributed through Africa, Asia, Europe and North America. Most species of ''Rabdophaga'' gall willows (''Salix'' sp.); one exception is ''R. giraudiana'' which galls the stems of poplars ( ''Populus'' sp.). Species * '' Rabdophaga absobrina'' ( Felt, 1907) * '' Rabdophaga albipennis'' ( Loew, 1850) * '' Rabdophaga auritae'' * '' Rabdophaga californica'' ( Felt, 1908) * '' Rabdophaga caulicola'' ( Felt, 1909) * '' Rabdophaga cephalanthi'' ( Felt, 1908) * '' Rabdophaga cinerearum'' * '' Rabdophaga clausilia'' (Bremi, 1847) * '' Rabdophaga clavifex'' (Kieffer 1891) * '' Rabdophaga consobrina'' ( Felt, 1907) * '' Rabdophaga degeerii'' ( Bremi, 1847) * '' Rabdophaga deletrix'' (Rübsaamen, 1916) * '' Rabdophaga dubiosa'' (Kieffer, 1913) * '' Rabdophaga essigi'' ( Felt, 1926) * '' Rabdophaga exsiccans'' (Rübsaamen, 1916) * '' Rabdophaga frater'' ( Cockerell, 1890) * '' Rabdophaga gemm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insects Described In 1916
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. Insect ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Taxa Named By Ewald Heinrich Rübsaamen
In biology, a taxon (back-formation from ''Taxonomy (biology), 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 Taxonomic rank, 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 Linnaean taxonomy, system in ''Systema Naturae'', 10th edition (1758), as well as an unpublished work by Bernard de Jussieu, Bernard and Antoine Laurent de Jussieu. The idea of a unit-based system of bio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
