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Lestes Dryas
''Lestes dryas'' is a species of damselfly in the family Lestidae, the spreadwings. Its common names include emerald spreadwing, scarce emerald damselfly and robust spreadwing.Boudot, J. 2014''Lestes dryas''.The IUCN Red List of Threatened Species. Downloaded on 28 January 2016. An alternate name in Ireland is the turlough spreadwing. This species is native to the Holarctic, especially northern parts of Eurasia and North America. It is relictual in North Africa. ''L. dryas'' can tolerate extreme conditions that few other dragonflies can survive. Identification This damselfly is about 35 to 42 millimeters long, the males are generally longer than the females. The males' wingspan is about 45 millimeters and the females' about 47 millimeters.Watson, L., and Dallwitz, M. J. 2003 onwards''Lestes dryas'' (Kirby, 1890).British insects: Dragonglies and Damselflies (Odonata). Version: 1st January 2012. Like the other members of the genus ''Lestes'', both sexes of ''L. dryas'' have la ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pronotum
The prothorax is the foremost of the three segments in the thorax of an insect, and bears the first pair of legs. Its principal sclerites (exoskeletal plates) are the pronotum (dorsal), the prosternum (ventral), and the propleuron (lateral) on each side. The prothorax never bears wings in extant insects (except in some cases of atavism), though some fossil groups possessed wing-like projections. All adult insects possess legs on the prothorax, though in a few groups (e.g., the butterfly family Nymphalidae) the forelegs are greatly reduced. In many groups of insects, the pronotum is reduced in size, but in a few it is hypertrophied, such as in all beetles (Coleoptera). In most treehoppers (family Membracidae, order Hemiptera), the pronotum is expanded into often fantastic shapes that enhance their camouflage or mimicry. Similarly, in the Tetrigidae, the pronotum is extended backward to cover the flight wings, supplanting the function of the tegmina. See also *Glossary of entomolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Odonata Of North America
Odonata is an order of flying insects that includes the dragonflies and damselflies. Members of the group first appeared during the Triassic, though members of their total group, Odonatoptera, first appeared in Late Carboniferous. The two common groups are distinguished with dragonflies, placed in the suborder Epiprocta, usually being larger, with eyes together and wings up or out at rest, while damselflies, suborder Zygoptera, are usually smaller with eyes placed apart and wings along body at rest. All Odonata have aquatic larvae called naiads (nymphs), and all of them, larvae and adults, are carnivorous. The adults can land, but rarely walk. Their legs are specialised for catching prey. They are almost entirely insectivorous. Etymology and terminology Fabricius coined the term ''Odonata'' in 1793 from the Ancient Greek ( Ionic form of ) 'tooth'. One hypothesis is that it was because their maxillae are notably toothed. Most insects also have toothed mandibles. The wo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Odonata Species Of Metropolitan France
This article is an alphabetic list of odonates (dragonflies and damselflies) species found in Metropolitan France, including Corsica. * '' Gomphus flavipes'', the river clubtail * '' Gomphus graslinii'' * '' Gomphus pulchellus'', the Western clubtail * ''Gomphus vulgatissimus'', the common clubtail * ''Lestes barbarus'', the Southern emerald damselfly * ''Lestes dryas'', the emerald spreadwing * ''Lestes macrostigma'', the dark emerald damselfly * ''Lestes sponsa'', the emerald damselfly * ''Lestes virens'', the small emerald damselfly * '' Leucorrhinia albifrons'', the dark whiteface * '' Leucorrhinia caudalis'', the lilypad whiteface * ''Libellula depressa'', the broad-bodied chaser * '' Macromia splendens'' * '' Onychogomphus forcipatus'', the small pincertail * '' Onychogomphus uncatus'', the large pincertail * ''Ophiogomphus cecilia'' * '' Orthetrum cancellatum'', the black-tailed skimmer * '' Platycnemis acutipennis'', the orange featherleg * '' Trithemis annulata'', the vio ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Odonata Species Of Great Britain
There are 57 recorded species of Odonata in Great Britain, Britain, made up of 21 damselfly, damselflies (suborder Zygoptera) and 36 dragonfly, dragonflies (suborder Anisoptera). Of these, 42 species (17 damselflies and 25 dragonflies) are resident (biology), resident breeders, and the remainder are either Extinction, extinct species, or vagrancy (biology), vagrants - in respect of the latter, this list follows the decisions of the Odonata Records Committee. Some of these rare species have not been seen since the 19th Century; however, the British Odonata list is also currently undergoing a period of unprecedented change, as new species are being discovered for the first time, some going on to become breeding species. This list is based on the following principal references: * Merritt, R., N. W. Moore and B. C. Eversham (1996), ''Atlases of the flora and fauna of Britain and Ireland, Atlas of the dragonflies of Britain and Ireland'', HMSO () * Parr, A. J. (1996), Dragonfly move ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
List Of Damselflies Of The World (Lestidae)
*''Archilestes californicus'' *'' Archilestes exoletus'' *''Archilestes grandis'' *'' Archilestes guayaraca'' *'' Archilestes latialatus'' *'' Archilestes neblina'' *'' Archilestes regalis'' *''Archilestes tuberalatus'' *'' Austrolestes aleison'' *'' Austrolestes analis'' *'' Austrolestes annulosus'' *'' Austrolestes aridus'' *''Austrolestes cingulatus'' *'' Austrolestes colensonis'' *'' Austrolestes insularis'' *'' Austrolestes io'' *'' Austrolestes leda'' *''Austrolestes minjerriba'' *'' Austrolestes psyche'' *''Chalcolestes parvidens'' *''Chalcolestes viridis'' *''Indolestes albicaudus'' *''Indolestes alfurus'' *''Indolestes alleni'' *''Indolestes anomalus'' *''Indolestes aruanus'' *''Indolestes assamicus'' *''Indolestes bellax'' *''Indolestes bilineatus'' *''Indolestes birmanus'' *''Indolestes boninensis'' *''Indolestes cheesmanae'' *'' Indolestes coeruleus'' *''Indolestes cyaneus'' *'' Indolestes dajakanus'' *''Indolestes davenporti'' *''Indolestes divisus'' *'' Indolestes extra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Diapause
In animal dormancy, diapause is the delay in development in response to regular and recurring periods of adverse environmental conditions.Tauber, M.J., Tauber, C.A., Masaki, S. (1986) ''Seasonal Adaptations of Insects''. Oxford University Press It is a physiological state with very specific initiating and inhibiting conditions. The mechanism is a means of surviving predictable, unfavorable environmental conditions, such as temperature extremes, drought, or reduced food availability. Diapause is observed in all the life stages of arthropods, especially insects. Embryonic diapause, a somewhat similar phenomenon, occurs in over 130 species of mammals, possibly even in humans, and in the embryos of many of the oviparous species of fish in the order Cyprinodontiformes. Activity levels of diapausing stages can vary considerably among species. Diapause may occur in a completely immobile stage, such as the pupae and eggs, or it may occur in very active stages that undergo extensive migrat ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
British Dragonfly Society
The British Dragonfly Society is a conservation organisation in the United Kingdom. It was founded in 1983 and its aims are to promote and to encourage the study and conservation of dragonflies and damselflies and their natural habitats, especially in the United Kingdom. The Society runs the Dragonfly Recording Network (DRN) to collect Odonata records in the UK. It also promotes a range of research and conservation projects. The British Dragonfly Society is a registered charity, number 800196. See also *Odonata *List of British dragonflies There are 57 recorded species of Odonata in Britain, made up of 21 damselflies (suborder Zygoptera) and 36 dragonflies (suborder Anisoptera). Of these, 42 species (17 damselflies and 25 dragonflies) are resident breeders, and the remainder are ... References External links *Worldwide Dragonfly Association [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ireland
Ireland ( ; ga, Éire ; Ulster Scots dialect, Ulster-Scots: ) is an island in the Atlantic Ocean, North Atlantic Ocean, in Northwestern Europe, north-western Europe. It is separated from Great Britain to its east by the North Channel (Great Britain and Ireland), North Channel, the Irish Sea, and St George's Channel. Ireland is the List of islands of the British Isles, second-largest island of the British Isles, the List of European islands by area, third-largest in Europe, and the List of islands by area, twentieth-largest on Earth. Geopolitically, Ireland is divided between the Republic of Ireland (officially Names of the Irish state, named Ireland), which covers five-sixths of the island, and Northern Ireland, which is part of the United Kingdom. As of 2022, the Irish population analysis, population of the entire island is just over 7 million, with 5.1 million living in the Republic of Ireland and 1.9 million in Northern Ireland, ranking it the List of European islan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thames Estuary
The Thames Estuary is where the River Thames meets the waters of the North Sea, in the south-east of Great Britain. Limits An estuary can be defined according to different criteria (e.g. tidal, geographical, navigational or in terms of salinity). For this reason the limits of the Thames Estuary have been defined differently at different times and for different purposes. Western This limit of the estuary has been defined in two main ways: * The narrow estuary is strongly tidal and is known as the Tideway. It starts in south-west London at Teddington Lock and weir, Teddington/Ham. This point is also mid-way between Richmond Lock which only keeps back a few miles of man-made head (stasis) of water during low tide and the extreme modern-era head at Thames Ditton Island on Kingston reach where slack water occurs at maximal high tide in times of rainfall-caused flooded banks. In terms of salinity the transition from freshwater to estuarine occurs around Battersea; east of the Th ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mediterranean
The Mediterranean Sea is a sea connected to the Atlantic Ocean, surrounded by the Mediterranean Basin and almost completely enclosed by land: on the north by Western and Southern Europe and Anatolia, on the south by North Africa, and on the east by the Levant. The Sea has played a central role in the history of Western civilization. Geological evidence indicates that around 5.9 million years ago, the Mediterranean was cut off from the Atlantic and was partly or completely desiccated over a period of some 600,000 years during the Messinian salinity crisis before being refilled by the Zanclean flood about 5.3 million years ago. The Mediterranean Sea covers an area of about , representing 0.7% of the global ocean surface, but its connection to the Atlantic via the Strait of Gibraltar—the narrow strait that connects the Atlantic Ocean to the Mediterranean Sea and separates the Iberian Peninsula in Europe from Morocco in Africa—is only wide. The Mediterranean Sea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Emerald Spreadwing 2
Emerald is a gemstone and a variety of the mineral beryl (Be3Al2(SiO3)6) colored green by trace amounts of chromium or sometimes vanadium.Hurlbut, Cornelius S. Jr. and Kammerling, Robert C. (1991) ''Gemology'', John Wiley & Sons, New York, p. 203, . Beryl has a hardness of 7.5–8 on the Mohs scale. Most emeralds are highly included, so their toughness (resistance to breakage) is classified as generally poor. Emerald is a cyclosilicate. Etymology The word "emerald" is derived (via fro, esmeraude and enm, emeraude), from Vulgar Latin: ''esmaralda''/''esmaraldus'', a variant of Latin ''smaragdus'', which was a via grc, σμάραγδος (smáragdos; "green gem") from a Semitic language. According to Webster's Dictionary the term emerald was first used in the 14th century. Properties determining value Emeralds, like all colored gemstones, are graded using four basic parameters–the four ''C''s of connoisseurship: ''color'', ''clarity,'' ''cut'' and ''carat weight''. Norm ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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