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Knopper Gall
''Andricus quercuscalicis'' is a gall wasp species inducing knopper galls. Knopper galls develop as a chemically induced distortion of growing acorns on pedunculate oak (''Quercus robur'' L.) trees, caused by gall wasps, which lay eggs in buds with their ovipositor. The gall thus produced can greatly reduce the fecundity of the oak host, making this gall potentially more of a threat to the reproductive ability of the tree than those that develop on leaves, buds, stems, etc. The Turkey oak ('' Quercus cerris'' L.), introduced into Britain in 1735, is required for the completion of the life cycle of the gall. The knopper is a recent introduction to the British Isles, first arriving in the 1960s and now found throughout England, Wales and as far north as Scotland; first occurring for example in 2007 at Eglinton Country Park in North Ayrshire. The physical appearance of the gall The large 2 cm gall growth appears as a mass of green to yellowish-green, ridged, and at first stic ... [...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 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 b ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canonbie
Canonbie ( gd, Canonbaidh) is a small village in Dumfriesshire within the local authority area of Dumfries and Galloway in Scotland, south of Langholm and north of the Anglo-Scottish border. It is on the A7 road from Carlisle to Edinburgh, and the River Esk flows through it. There are frequent references in older documents to it as Canobie. History Canonbie was the main population centre within the Debatable Lands, bounded on the west by the River Sark, to the east by the River Esk and Liddel Water, on the north by the Bruntshiell Moor and Tarras Moss, and on the south by the estuary of the Esk. The main families holding land and exerting influence in the area were the Graemes, Armstrongs, Elliots and Bells. Canonbie Parish had an Austin priory at Hallgreen, dating back to about 1165. The priory was destroyed during the reign of Henry VIII after the Battle of Solway Moss in 1542. A grassy mound in a field near the present day church is believed to be the only remnant ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hymenoptera Of Europe
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 c ... [...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 bac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eriophyes Tiliae
''Eriophyes tiliae'' is a mite that forms the lime nail gall or bugle gall. It develops in a chemically induced gall; an erect, oblique or curved distortion rising up from the upper surface of the leaves of the lime (linden) trees (genus ''Tilia''), such as the large-leaved lime tree '' Tilia platyphyllos'', the common lime tree '' Tilia × europaea'', etc. Description During late spring and summer, tubular growths up to long develop apically on the leaves of ''Tilia sp.'' These galls are yellow-green or red in color, may be very numerous, and predominantly occur on the lower leaves in some sub-species. The galls appear not to affect the health of their hosts, and no way of controlling or preventing them exists. Taxonomy Several sub-species have been identified, partly identified by their positioning on the leaves in relation to the veins and other structures. Life cycle The mites move onto the foliage in the spring, having overwintered in bark crevices and around bud ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alder Tongue Gall
''Taphrina alni'' is a fungal plant pathogen that causes alder tongue gall, a chemically induced distortion of female alder catkins (''Alnus glutinosa'').Ellis, Hewett A. (2001). ''Cecidology''. Vol.16, No.1. p. 24.Clarification of synonyms ''Taphrina alni'' produces a distinctive tongue-like growth which derives mainly from the ovarian tissues of the alder catkin or from the bracteoles. These alder pseudocones may carry several tongue galls, each of which usually appear to come from the same position; those curling down usually come from the bracteoles tissues and those projecting upwards usually come from ovarian tissues.Ellis, Hewett A. (2001). ''Cecidology ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Red-pea Gall
The red-pea gall or red currant gall develops as a chemically induced distortion arising from the underside of the mid-rib of a vein on ''Quercus'' species and it is attached by a short stalk or peduncle. The red-wart gall is the sexual phase of the same species. Cause The gall is caused by the parthenogenetic generation of ''Cynips divisa'', which has been known by the synonyms ''Diplolepis divisa'', ''Dryophanta divisa'' and ''Spathegaster verrucosus''. Appearance In appearance it is glossy and somewhat flattened sphere and from ten to fifteen or so may occur on a single leaf. The average size is and the colouring starts as green, passing to yellow, orange and then red-brown; the season is midsummer onwards. Circular emergence holes appear in the galls. Life cycle Many of the agamic imagines emerge in October. After overwintering, ''Cynips'' develops eggs parthenogenetically and their eggs develop in live buds as 'red-wart galls'. The infested buds become yellow, orange ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Cola-nut Gall
Cola-nut gallsDarlington, Arnold (1975) ''The Pocket Encyclopaedia of Plant Galls in Colour.'' Pub. Blandford Press. Poole. . P. 155. develop as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak (''Quercus robur'') or sessile oak (''Quercus petraea'') trees, caused by the agamic gall wasp ''Andricus lignicola'' ( Hartig, 1840) which lays single eggs within leaf buds using their ovipositor. A previous name or synonym for the species ''A. lignicola'' is ''A. lignicolus'' and ''A. venheurni''. The physical appearance of the galls The galls are found in small groups, which however do not coalesce, helping to prevent mis-identification with the oak marble gall (''Andricus kollari''), in addition the shape is ovoid rather than spherical and it is scaly rather than smooth. It grows up to about 10 x 8 mm and is at first green, rapidly changing to grey-brown, with light red patches where the original bud scales have separated. It is hard and firm, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Rose Bedeguar Gall
''Diplolepis rosae'' is a gall wasp which causes a gall known as the rose bedeguar gall, Robin's pincushion, mossy rose gall, or simply moss gall.Darlington, Arnold (1975) ''The Pocket Encyclopaedia of Plant Galls in Colour.'' Pub. Blandford Press. Poole. . P. 133 - 135. The gall develops as a chemically induced distortion of an unopened leaf axillary or terminal bud, mostly on field rose ('' Rosa arvensis'') or dog rose ('' Rosa canina'') shrubs. The female wasp lays up to 60 eggs within each leaf bud using her ovipositor. The grubs develop within the gall, and the wasps emerge in spring; the wasp is parthenogenetic with fewer than one percent being males. A similar gall is caused by '' Diplolepis mayri'', but this is much less common. Names Being so prominent and interesting in appearance, this gall has more folklore attached to it than most. The term 'Bedeguar, Bedegar or Bedequar' comes from a French word, ''bédégar'', and is ultimately from the Persian, ''bād-āwar'', me ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pineapple Gall
The Pineapple gall adelgid (''Adelges abietis'') is a type of conifer-feeding insect that forms pineapple-shaped plant galls on its host species, commonly Norway and Sitka spruce. The adelgids (genus ''Adelges'') are pear-shaped, soft-bodied green insects with long antennae, closely related to the aphid. ''Adelges'' lays up to one hundred eggs at a time, one on each needle. ''Adelges abietis'' (Linnaeus, 1758) is one of the most common species; synonyms are ''A. gallarum-abietis'', ''Chermes abietis'' and ''Sacciphantes abietis''. The pineapple or pseudocone gallDarlington, Arnold (1975) ''The Pocket Encyclopaedia of Plant Galls in Colour.'' Pub. Blandford Press. Poole. . P. 114. is a type of insect-formed gall, or abnormal outgrowth of plant tissue, that develops as a chemically induced distortion of needles, observed mostly on Norway spruce and Sitka spruce. Terminology and distribution Prominent in appearance, the pineapple or pseudocone gall is often confused with the actua ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Oak Artichoke Gall
Andricus foecundatrix (formerly ''Andricus fecundator'') is a parthenogenetic gall wasp which lays a single egg within a leaf bud, using its ovipositor, to produce a gall known as an oak artichoke gall, oak hop gall, larch-cone gall or hop strobile The gall develops as a chemically induced distortion of leaf axillary or terminal buds on pedunculate oak (''Quercus robur'') or sessile oak (''Quercus petraea'') trees. The larva lives inside a smaller hard casing inside the artichoke and this is released in autumn. The asexual wasp emerges in spring and lays her eggs in the oak catkins. These develop into small oval galls which produce the sexual generation of wasps.The Virtual Filed Guide UK A yew artichoke gall caused by the fly '' Taxomyia ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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