Langmead and Weston Level () is a 168.8

hectare The hectare (; SI symbol: ha) is a non-SI metric unit of area equal to a square with 100-metre sides (1 hm2), or 10,000 m2, and is primarily used in the measurement of land. There are 100 hectares in one square kilometre. An acre is a ...

(417.1 acre)

biological Site of Special Scientific Interest A Site of Special Scientific Interest (SSSI) in Great Britain or an Area of Special Scientific Interest (ASSI) in the Isle of Man and Northern Ireland is a conservation designation denoting a protected area in the United Kingdom and Isle of ...

Somerset ( en, All The People of Somerset) , locator_map = , coordinates = , region = South West England , established_date = Ancient , established_by = , preceded_by = , origin = , lord_lieutenant_office =Lord Lieutenant of Somerset , lord_ ...

, notified in 1991. Langmead and Weston Level form part of the nationally important grazing

marsh A marsh is a wetland that is dominated by herbaceous rather than woody plant species.Keddy, P.A. 2010. Wetland Ecology: Principles and Conservation (2nd edition). Cambridge University Press, Cambridge, UK. 497 p Marshes can often be found at ...

and

ditch A ditch is a small to moderate divot created to channel water. A ditch can be used for drainage, to drain water from low-lying areas, alongside roadways or fields, or to channel water from a more distant source for plant irrigation. Ditches ar ...

systems of the

Somerset Levels The Somerset Levels are a coastal plain and wetland area of Somerset, England, running south from the Mendip Hills, Mendips to the Blackdown Hills. The Somerset Levels have an area of about and are bisected by the Polden Hills; the areas to ...

and Moors. The site is nationally important for its species-rich neutral

grassland A grassland is an area where the vegetation is dominated by grasses (Poaceae). However, sedge (Cyperaceae) and rush (Juncaceae) can also be found along with variable proportions of legumes, like clover, and other herbs. Grasslands occur natur ...

and the

invertebrate Invertebrates are a paraphyletic group of animals that neither possess nor develop a vertebral column (commonly known as a ''backbone'' or ''spine''), derived from the notochord. This is a grouping including all animals apart from the chordate ...

community found in the ditches and rhynes. The land lies in the flood plain of the

River Parrett The River Parrett flows through the counties of Dorset and Somerset in South West England, from its source in the Thorney Mills springs in the hills around Chedington in Dorset. Flowing northwest through Somerset and the Somerset Levels to it ...

and many of the fields are poorly drained and seasonally water-logged. The terrestrial and aquatic invertebrates recorded on the site include four nationally rare species: the Great Silver Diving Beetle (''Hydrophilus piceus''), the

soldier fly The soldier flies (Stratiomyidae, sometimes misspelled as Stratiomyiidae, from Greek - soldier; - fly) are a family of flies (historically placed in the now-obsolete group Orthorrhapha). The family contains over 2,700 species in over 380 extan ...

(''Odontomyia ornata'') and two true

flies Flies are insects of the order Diptera, the name being derived from the Greek δι- ''di-'' "two", and πτερόν ''pteron'' "wing". Insects of this order use only a single pair of wings to fly, the hindwings having evolved into advanced ...

, ''

Lonchoptera scutellata ''Lonchoptera'' is a genus of spear-winged flies ( Lonchopteridae). Their common name refers to their subacute (pointed) wings, which have a distinct and sexually dimorphic venation. Description Species in ''Lonchoptera'' are tiny to small, at ...

'' and '' Stenomicra cogani''.

References

{{SSSIs Somerset biological Sites of Special Scientific Interest in Somerset Sites of Special Scientific Interest notified in 1991