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Andricus Corruptrix
''Andricus corruptrix'' is a species of gall-forming wasp, in the genus '' Andricus''. It is found in Europe. Life cycle Adults lay their eggs on the buds of various species of oak, including common oak (''Quercus robur''), sessile oak ('' Q. petraea''), downy oak ('' Q. pubescens''), Algerian oak ( Q. canariensis), chestnut oak ( Q. montana) and Turkey oak ('' Q. cerris''). The galls of the asexual generation are up to 5 mm across, hard and woody and have one to five smooth rounded lobes. They first appear in late summer but do not mature until the following July when the adults insect emerge. Females lay their eggs on the buds of Turkey oak and the galls develop during late winter. This is the gall of the sexual generation which is pale green at first, thin-walled and as they mature, they become tinged with pink and later turn orange-brown. Mature sexual galls are about 2.5 mm long, egg-shaped with a pointed tip and can resemble the mature galls of ''Andricus kollar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gall Wasp
Gall wasps, also incorrectly called gallflies, are hymenopterans of the family Cynipidae in the wasp superfamily Cynipoidea. Their common name comes from the galls they induce on plants for larval development. About 1,300 species of this generally very small creature (1–8 mm) are known worldwide, with about 360 species of 36 different genera in Europe and some 800 species in North America. Features Like all Apocrita, gall wasps have a distinctive body shape, the so-called Petiole (insect anatomy), wasp waist. The first abdominal tergum (the propodeum) is conjoined with the Thorax (insect anatomy), thorax, while the second abdominal segment forms a sort of shaft, the Petiole (insect anatomy), petiole. The petiole connects with the gaster (insect anatomy), gaster, which is the functional abdomen in apocritan wasps, starting with the third abdominal segment proper. Together, the petiole and the gaster form the metasoma, while the thorax and the propodeum make up the mesosoma ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andricus
''Andricus'' is a genus of oak gall wasps in the family Cynipidae. Life cycle As in all Hymenoptera, sex-determination in species of the genus ''Andricus'' is governed by haplodiploidy: males develop from unfertilized eggs and are haploid, and females develop from fertilized eggs and are diploid. Many species in the genus alternate between an asexual generation and a sexual generation. Species The taxonomy of the genus ''Andricus'' is uncertain, with many of the approximately 375 species considered dubious. The following species are currently recognised in the genus ''Andricus'': * '' Andricus aciculatus'' Beutenmuller, 1909 * '' Andricus ahmeti'' Melika, Mutun & Dinç, 2014 * ''Andricus albicomus'' Weld, 1952 * '' Andricus albipes'' Hartig, 1840 * '' Andricus albobalani'' Weld, 1926 * '' Andricus alniensis'' Folliot, 1964 * ''Andricus amblycerus'' (Giraud, 1859) * ''Andricus amenti'' Giraud, 1859 * ''Andricus amphorus'' (Weld, 1926) * ''Andricus analis'' (Fonscolombe, 18 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Robur
''Quercus robur'', commonly known as common oak, pedunculate oak, European oak or English oak, is a species of flowering plant in the beech and oak family, Fagaceae. It is a large tree, native plant, native to most of Europe west of the Caucasus. It is widely cultivated in temperate regions elsewhere and has escaped into the wild in scattered parts of China and North America. Description ''Quercus robur'' is a large deciduous tree, with circumference of grand oaks from to an exceptional . The Majesty Oak with a circumference of is the thickest tree in Great Britain. The Brureika (Bridal Oak) in Norway with a circumference of (2018) and the Kaive Oak in Latvia with a circumference of are among the thickest trees in Northern Europe. The largest historical oak was known as the Imperial Oak from Bosnia and Herzegovina. This specimen was recorded at 17.5 m in circumference at breast height and estimated at over 150 m³ in total volume. It collapsed in 1998. The species has l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Petraea
''Quercus petraea'', commonly known as the sessile oak, Cornish oak, Irish Oak or durmast oak, is a species of oak tree native to most of Europe and into Anatolia and Iran. The sessile oak is the national tree of Ireland, and an unofficial emblem in Wales and Cornwall. Description The sessile oak is a large deciduous tree up to tall, in the white oak section of the genus (''Quercus'' sect. ''Quercus'') and similar to the pedunculate oak (''Q. robur''), with which it overlaps extensively in range. The leaves are long and broad, evenly lobed with five to six lobes on each side and a petiole. The male flowers are grouped into catkins, produced in the spring. The fruit is an acorn long and broad, which matures in about six months. Comparison with pedunculate oak Significant botanical differences from pedunculate oak (''Q. robur'') include the stalked leaves, and the stalkless (sessile) acorns from which one of its common names is derived. It occurs in upl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Pubescens
''Quercus pubescens'', the downy oak or pubescent oak, is a species of white oak (genus ''Quercus'' sect. ''Quercus'') native to southern Europe and southwest Asia, from northern Spain (Pyrenees) east to the Crimea and the Caucasus. It is also found in France and parts of central Europe. Description ''Quercus pubescens'' is a medium-sized deciduous tree growing up to . Forest-grown trees grow tall, while open-growing trees develop a very broad and irregular crown. They are long-lived, to several hundred years, and eventually grow into very stout trees with trunks up to in diameter. Open-grown trees frequently develop several trunks. The Bark (botany), bark is very rough, light gray and divided into small flakes. Large trees develop very thick whitish bark cracked into deep furrows, similar to the pedunculate oak but lighter in colour. The twigs are light purple or whitish, with tomentum. The buds are small () and blunt, light brown. The leaves are leathery usually long (rar ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Canariensis
''Quercus canariensis'', the Algerian oak, Mirbeck's oak or zean oak, is an oak in the section ''Quercus'' sect. ''Mesobalanus'', native to southern Portugal, Spain, Tunisia, Algeria and Morocco. Despite the scientific name, it does not occur naturally today in the Canary Islands, though it may have in the past. Description ''Quercus canariensis'' is a medium-sized deciduous to semi-evergreen tree growing to tall with a trunk up to in diameter. The leaves are long and 6–8 cm broad, with 6–12 pairs of shallow lobes. The flowers are catkins; the fruit is an acorn 2.5 cm long and 2 cm broad, in a shallow cup. The tree is a recipient of the Royal Horticultural Society's Award of Garden Merit. Landmark specimens Grand old Algerian oak tree was planted on 19 May 1863. It resides within the Kyneton Botanical Gardens in the town of Kyneton in the Australian state of Victoria. This tree is listed by the National Trust on the Register of Significant Trees in V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Montana
''Quercus montana'', the chestnut oak, is a species of oak in the white oak group, ''Quercus'' sect. ''Quercus''. It is native to the eastern United States, where it is one of the most important ridgetop trees from southern Maine southwest to central Mississippi, with an outlying northwestern population in southern Michigan. It is also sometimes called rock oak because of its presence in montane and other rocky habitats. Description As a consequence of its dry habitat and ridgetop exposure, the chestnut oak is not usually a large tree, typically growing to tall; specimens growing in better conditions can grow up to tall. They tend to have a similar spread of . A 10-year-old sapling grown in full sun will stand about tall. This species is often an important canopy species in an oak-heath forest. It is readily identified by its massively-ridged dark gray-brown bark, the thickest of any eastern North American oak. The leaves are long and broad, shallowly lobed with 10 ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Quercus Cerris
''Quercus cerris'', the Turkey oak or Austrian oak, is an oak native to south-eastern Europe and Asia Minor. It is the type species of ''Quercus'' sect. ''Cerris'', a section of the genus characterised by shoot buds surrounded by soft bristles, bristle-tipped leaf lobes, and acorns that usually mature in 18 months. Description ''Quercus cerris'' is a large deciduous tree growing to tall with a trunk up to in diameter. The bark is dark gray and deeply furrowed. On mature trees, the bark fissures are often streaked orange near the base of the trunk. The glossy leaves are long and 3–5 cm wide, with 6–12 triangular lobes on each side; the regularity of the lobing varies greatly, with some trees having very regular lobes, others much less regular. The flowers are wind-pollinated catkins, maturing about 18 months after pollination; the fruit is a large acorn, long and 2 cm broad, bicoloured with an orange basal half grading to a green-brown tip; the acorn cup ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Andricus Kollari
''Andricus kollari'', also known as the marble gall wasp, is a parthenogenetic species of wasp which causes the formation of marble galls on oak trees. Synonyms for the species include ''Cynips kollari'', ''Andricus quercusgemmae'', ''A. minor'', ''A. indigenus'' and ''A. circulans''. Description Adult ''Andricus kollari'' are dark brown, and about in length. It has alternating sexual and asexual generations, each often taking two years to complete. Like all gall wasps, it causes the formation of parasitic galls on trees in which it lays its larvae. In May or June, a sexual female lays her eggs in the developing buds of susceptible oak trees using her ovipositor. Chemicals produced by both the adult and developing wasps cause the formation of a gall. Pedunculate oak (''Quercus robur''), sessile oak (''Quercus petraea'') and the hybrid ''Quercus × rosacea'' can all be parasitized. The host trees are often immature or retarded specimens; galls are rarer on older, healthier tre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Scandinavia
Scandinavia; Sámi languages: /. ( ) is a subregion#Europe, subregion in Northern Europe, with strong historical, cultural, and linguistic ties between its constituent peoples. In English usage, ''Scandinavia'' most commonly refers to Denmark, Norway, and Sweden. It can sometimes also refer more narrowly to the Scandinavian Peninsula (which excludes Denmark but includes part of Finland), or more broadly to include all of Finland, Iceland, and the Faroe Islands. The geography of the region is varied, from the Norwegian fjords in the west and Scandinavian mountains covering parts of Norway and Sweden, to the low and flat areas of Denmark in the south, as well as archipelagos and lakes in the east. Most of the population in the region live in the more temperate southern regions, with the northern parts having long, cold, winters. The region became notable during the Viking Age, when Scandinavian peoples participated in large scale raiding, conquest, colonization and trading mostl ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Iberian Peninsula
The Iberian Peninsula (), ** * Aragonese and Occitan: ''Peninsula Iberica'' ** ** * french: Péninsule Ibérique * mwl, Península Eibérica * eu, Iberiar penintsula also known as Iberia, is a peninsula in southwestern Europe, defining the westernmost edge of Eurasia. It is principally divided between Spain and Portugal, comprising most of their territory, as well as a small area of Southern France, Andorra, and Gibraltar. With an area of approximately , and a population of roughly 53 million, it is the second largest European peninsula by area, after the Scandinavian Peninsula. Name Greek name The word ''Iberia'' is a noun adapted from the Latin word "Hiberia" originating in the Ancient Greek word Ἰβηρία ('), used by Greek geographers under the rule of the Roman Empire to refer to what is known today in English as the Iberian Peninsula. At that time, the name did not describe a single geographical entity or a distinct population; the same name was us ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cynipidae
Gall wasps, also incorrectly called gallflies, are hymenopterans of the family Cynipidae in the wasp superfamily Cynipoidea. Their common name comes from the galls they induce on plants for larval development. About 1,300 species of this generally very small creature (1–8 mm) are known worldwide, with about 360 species of 36 different genera in Europe and some 800 species in North America. Features Like all Apocrita, gall wasps have a distinctive body shape, the so-called wasp waist. The first abdominal tergum (the propodeum) is conjoined with the thorax, while the second abdominal segment forms a sort of shaft, the petiole. The petiole connects with the gaster, which is the functional abdomen in apocritan wasps, starting with the third abdominal segment proper. Together, the petiole and the gaster form the metasoma, while the thorax and the propodeum make up the mesosoma. The antennae are straight and consist of two or three segments. In many varieties, the backside ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
