Hairy dragonfly | |
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both images show a male eating a bee in Estonia | |
Scientific classification | |
Kingdom: | Animalia |
Phylum: | Arthropoda |
Class: | Insecta |
Order: | Odonata |
Infraorder: | Anisoptera |
Family: | Aeshnidae |
Genus: | Brachytron Evans, 1845 [2] [3] |
Species: | B. pratense |
Binomial name | |
Brachytron pratense (Müller, 1764) | |
Brachytron is a monotypic genus of European dragonfly of the family Aeshnidae containing the hairy dragonfly (Brachytron pratense), also known as the hairy hawker or spring hawker. [4]
The hairy dragonfly is named for its hairy thorax, distinguishing it from other hawkers. It has a long, narrow pterostigma [5] (the coloured, sclerotized patch on the outer region of each wing).
The antehumeral stripes are usually thin and green. The hairy dragonfly has coupled, oval-shaped markings on its abdomen, blue on males and yellow on females. It is smaller than other species in the genus Aeshna. It is the United Kingdom's smallest hawker. [6]
The hairy dragonfly lives in ponds, lakes, fens, ditches, and canals rich in vegetation. Some plants that grow there include the common club rush, common reed, great fen sedge, and true bulrush. This dragonfly requires open and sunny areas with dense vegetation for protection. Here they are able to feed on flying insects, shelter, and grow sexually mature.
Although it is a common species, it is susceptible to uncongenial ditch management and poor water conditions. This is the reason the species disappeared for a few years, only to return recently. More so then its other relatives, the hairy dragonfly will only fly in sunshine and will hastily retreat if the sun happens to go in.
Like typical hawkers, the hairy dragonfly preys in mid-air on flying insects. It then carries its food to a suitable perch where it is able to eat and digest.
The hairy dragonfly's flight period is short and early, beginning in mid-May and ending in mid-July. Dead vegetation and living stems growing in the water, close to the water's edge, provide a home for the eggs. Two years later, larvae emerge by scaling plant stems just above the surface of the water or possibly crawling inland for about a meter where they have room to spread their wings.
Damselflies are flying insects of the suborder Zygoptera in the order Odonata. They are similar to dragonflies, which constitute the other odonatan suborder, Anisoptera, but are smaller and have slimmer bodies. Most species fold the wings along the body when at rest, unlike dragonflies which hold the wings flat and away from the body. An ancient group, damselflies have existed since at least the Lower Permian beginning about 299 million years ago, and are found on every continent except Antarctica.
Aeshna isoceles is a small hawker dragonfly that is found in Europe, mostly around the Mediterranean, and the lowlands of North Africa. Its common name in English is green-eyed hawker. In Britain it is a rare and local species and is known as the Norfolk hawker. It has a brown colour with green eyes and clear wings and also a yellow triangular mark on the second abdominal segment which gave rise to its scientific name. It used to be in the genus Anaciaeschna as it has several differences from the other members of the genus Aeshna. Its specific name is often spelt isosceles.
Strumpshaw Fen is a nature reserve managed by the Royal Society for the Protection of Birds (RSPB). It is situated at Strumpshaw on the River Yare in the English county of Norfolk around 6 miles (9.7 km) east of Norwich. The Buckenham Marshes RSPB reserve borders the reserve to the east.
The Aeshnidae, also called aeshnids, hawkers, or darners, is a family of dragonflies. The family includes the largest dragonflies found in North America and Europe and among the largest dragonflies on the planet.
Mentha aquatica is a perennial flowering plant in the mint family Lamiaceae. It grows in moist places and is native to much of Europe, northwest Africa and southwest Asia.
The beautiful demoiselle is a species of damselfly in the family Calopterygidae. It is found in Europe, North Africa, and Western Asia. It is often found along fast-flowing waters where it is most at home.
The southern hawker or blue hawker is a species of hawker dragonfly.
The Norfolk damselfly or dark bluet is a species of blue damselfly of the family Coenagrionidae native to Eurasia.
Moorlinch is a 226.0 hectare biological Site of Special Scientific Interest at Moorlinch in Somerset, notified in 1985.
Tealham and Tadham Moors is a 917.6 hectare biological Site of Special Scientific Interest south of Wedmore in Somerset, notified in 1985.
The great raft spider or fen raft spider is a European species of spider in the family Pisauridae. Like other Dolomedes spiders, it is semiaquatic, hunting its prey on the surface of water. It occurs mainly in neutral to alkaline, unpolluted water of fens and grazing marsh.
The golden-ringed dragonfly is a large, striking dragonfly and the longest British species, the only member of its genus to be found in the United Kingdom.
The Hudsonian whiteface is a species of dragonfly in the family Libellulidae. Its common name comes from where it is found, Hudson Bay.
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. An alternate name in Ireland is the turlough spreadwing.
Chalcolestes viridis, formerly Lestes viridis, is a damselfly of the family Lestidae. It has a metallic green body and at rest it holds its wings away from its body. Its common name is the willow emerald damselfly, the green emerald damselfly, or the western willow spreadwing. It has an elongated abdomen and pale brown spots on its wings and resides in areas of still water with overhanging trees.
Delphinium exaltatum, known by the common name tall larkspur, is a species of flowering plant in the genus Delphinium, part of the buttercup family. Other Delphinium species are also commonly known as tall larkspur, such as Delphinium barbeyi. D. exaltatum is native to the central and eastern United States, where it can be found in Kentucky, Maine, Ohio, Pennsylvania, Maryland, West Virginia, Virginia, North Carolina, Alabama, Tennessee, and Missouri.
Machynys Ponds is a Site of Special Scientific Interest (SSSI) in Carmarthenshire, Wales, designated in 1993 for its botanical features.