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Rabdophaga Clausilia
''Rabdophaga clausilia'' is a gall midge which, depending on the source, forms 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 be ...s on the leaves of willows (''Salix'' species), or is an inquiline living in the galls of a ''Rabdophaga'' species, or a predator. It was first described by Johann Jacob Bremi-Wolf in 1847. History There is some confusion as to which genus ''clausilia'' belongs. The Natural History Museum, London and Redfern et al (2011) put the insect in the genus ''Rabdophaga'' while Ellis W N, in the Plant Parasites of Europe website, places it in '' Dasineura''. Unfortunately the original description of the species is ″unrecognisable″ and the type species is missing! Appearance of the gall According to Redfern et al (2011), the gall is found on leave ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Johann Jacob Bremi-Wolf
Johann Jacob Bremi-Wolf (25 May 1791, Dübendorf – 27 February 1857, Zürich) was a Swiss entomologist and ''Kunsthandwerker'' (artist wood turner) in Zürich.Guyet, E. V., 1974 ''Vom Naturalienkabinett der Naturforschenden Gesellschaft in Zürich zum Zoologischen Museum der Universität Vierteljahrsschrift der Naturforschenden Gesellschaft in Zürich, Zürich'' 119, S. 379, pp. 376-381, Schr.verz. Bremi was born in Dübendorf, Switzerland to a pastor Johann Heinrich Bremi. He became deaf due to typhus fever at the age of 11 which made him shift from a clergy career to a trade in wood work with lathes. He however took an interest in insects and began to collect them and read about science. He married Magdalena Barbara Wolf in 1818 and they had two children. He corresponded with J.J. Siegfried of Zurich, Oswald Heer, Johannes Jacob Hegetschweiler and Friedrich Schulthess. He noted in poems that his deafness allowed him to focus on work but at some times he expressed a wish for ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dasineura Auritae
''Dasineura auritae'' is a gall midge which forms galls on the leaves of sallows (''Salix'' species) and their hybrids. It was first described by Ewald Heinrich Rübsaamen Ewald Heinrich Rübsaamen (20 May 1857, Haardt – 17 March 1919, Metternich) was a German teacher, artist, and amateur entomologist who studied gall forming insects, especially the gall midges (Cecidomyiidae), and worked on pest control in grapes, ... in 1916. Appearance of the gall The gall is a short downward, hairless, roll containing one yellowish red larva, or if several rolls run together, several larvae. There are two generations per year; the summer generation pupate in the gall and the winter generation on the ground. It is found on eared willow ( ''S. aurita''), goat willow ( ''S. caprea''), grey willow ( ''S. cinerea'') (as well as their hybrids) and Alpine grey willow ( ''S. glaucosericea''). Distribution The insect has been found in Austria, Belgium, Denmark, Germany, Great Britain, the Netherl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Insects Described In 1847
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] |
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] |
Salix Purpurea
''Salix purpurea'', the purple willow purpleosier willow or purple osier, is a species of willow native to most of Europe and western Asia north to the British Isles, Poland, and the Baltic States.Flora Europaea''Salix purpurea''/ref>Meikle, R. D. (1984). ''Willows and Poplars of Great Britain and Ireland''. BSBI Handbook No. 4. .Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins . It is a deciduous shrub growing to 1–3 m (rarely to 5 m) tall, with purple-brown to yellow-brown shoots, turning pale grey on old stems. The leaves are 2–8 cm (rarely to 12 cm) long and 0.3–1 cm (rarely 2 cm) wide; they are dark green above, glaucous green below, and unusually for a willow, are often arranged in opposite pairs rather than alternate. The flowers are small catkins 1.5-4.5 cm long, produced in early spring; they are often purple or red in colour, whence the name of the species (other willows mostly have whitish, yellow or green catkins). It is r ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Elaeagnos
''Salix eleagnos'' the bitter willow, olive willow, hoary willow, rosemary willow, or elaeagnus willow, is a species of flowering plant in the family Salicaceae, native to central and southern Europe and south west Asia. Growing to tall by broad, it is an erect bushy deciduous shrub with narrow grey-green leaves up to long, which turn yellow in autumn (fall). The green catkins, long, appear with the leaves in spring, male catkins having yellow anthers. Like all willows, the species is dioecious. The specific epithet ''eleagnos'' is frequently spelt ''elaeagnos'' ( Elaeagnus, silverberry or oleaster), though the original spelling has been accepted as a correct Greek form. ''Salix eleagnos'' subsp. ''angustifolia'' has gained the Royal Horticultural Society's Award of Garden Merit The Award of Garden Merit (AGM) is a long-established annual award for plants by the British Royal Horticultural Society (RHS). It is based on assessment of the plants' performance under UK grow ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Daphnoides
''Salix daphnoides'', the European violet willow, is a species of plant in the family Salicaceae. It can grow as a large shrub or small tree, normally reaching a height of , but can grow up to tall. Description It has a rounded crown with spreading branches with smooth, grey bark. The twigs are dark red/brown in colour, hairless and somewhat shiny. It has large buds, either hairless or with stiff, erect hairs. The leaves are oblong to narrow/obovate, normally between 7 and 12 cm long and 2 to 3 cm in width. They are hairy at first, but soon become glabrous, being a dark shiny green on their upper surfaces, and glaucous on their undersides. The catkins appear in February–March. Distribution and habitat Salix daphnoides occurs scattered across central Europe between the Baltic states and Piedmont, and from the Balkans to eastern France. It is native in the Alps, Pyrenees and the Carpathians, but has been naturalised by cultivation across a much wider area. It occurs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Caprea
''Salix caprea'', known as goat willow, pussy willow or great sallow, is a common species of willow native to Europe and western and central Asia.Meikle, R. D. (1984). ''Willows and Poplars of Great Britain and Ireland''. BSBI Handbook 4. . Description It is a deciduous shrub or small tree, reaching a height of , rarely to 13 m. The leaves are 3–12 cm long and from 2–8 cm wide, broader than most other willows. The flowers are soft silky, and silvery 3-7-cm-long catkins are produced in early spring before the new leaves appear; the male and female catkins are on different plants (dioecious). The male catkins mature yellow at pollen release, the female catkins mature pale green. The fruit is a small capsule 5–10 mm long containing numerous minute seeds embedded in fine, cottony hairs. The seeds are very small (about 0.2 mm) with the fine hairs aiding dispersal; they require bare soil to germinate.Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins. . The tw ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rabdophaga Marginemtorquens
''Rabdophaga marginemtorquens'' is a gall midge which forms 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 be ...s on willows (''Salix'' species) and is found in Europe. It was described by Johann Jacob Bremi-Wolf in 1847. Appearance of the gall The eggs are laid between the bud scales in the spring. The gall is a short or long downward, hairless, roll containing one or several yellowish-red or orange larvae. The galls are of varying lengths, often run together and often have orange, red or white patches. There are two or three generations in a year, with the summer generations pupating in the gall and the autumn generation pupating in the soil. It is found on white willow ( ''S. alba''), goat willow ( ''S. caprea''), grey willow ( ''S. cinerea''), violet willow ( ''S. daphn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Salix Alba
''Salix alba'', the white willow, is a species of willow native to Europe and western and central Asia.Meikle, R. D. (1984). ''Willows and Poplars of Great Britain and Ireland''. BSBI Handbook No. 4. .Rushforth, K. (1999). ''Trees of Britain and Europe''. Collins . The name derives from the white tone to the undersides of the leaves. It is a medium-sized to large deciduous tree growing up to 10–30 m tall, with a trunk up to 1 m diameter and an irregular, often-leaning crown. The bark is grey-brown, and deeply fissured in older trees. The shoots in the typical species are grey-brown to green-brown. The leaves are paler than most other willows, due to a covering of very fine, silky white hairs, in particular on the underside; they are 5–10 cm long and 0.5–1.5 cm wide. The flowers are produced in catkins in early spring, and pollinated by insects. It is dioecious, with male and female catkins on separate trees; the male catkins are 4–5 cm long, t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
