Return to HRS home page Dipterists Forum
A Dipterists Forum recording scheme

Navigation
Home
Forum
Photo gallery
Maps
Checklist
Hoverfly Newsletter
Memberlist
User-groups
FAQ
Search

User
Username:

Password:

 Remember me



I forgot my password

Don't have an account yet?
You can register for FREE


Search

Advanced Search

Who is Online

In total there are 5 users online :: 0 Registered, 0 Hidden and 5 Guests

Registered Users: None

[ View complete list ]


Most users ever online was 248 on Wed Dec 12, 2007 11:53 pm


Eumerus sabulonum

 
Post new topic   Reply to topic    Hoverfly Recording Scheme Forum Index -> The Species
View previous topic :: View next topic  
Author Message
stuart
Site Admin


Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sat May 28, 2005 5:39 pm    Post subject: Eumerus sabulonum Reply with quote

Eumerus sabulonum (FallÚn, 1817)

Identification ease/difficulty: 3

StatusSources of information
Back to top
View user's profile Send private message Send e-mail
stuart
Site Admin


Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sun May 29, 2005 8:41 am    Post subject: Species account from the Provisional atlas Reply with quote

Species account from Provisional atlas of British hoverflies, Ball & Morris, 2000.

Eumerus sabulonum (FallÚn, 1817)

Biology: The larvae remain unknown, but are thought to tunnel in bulbs or roots. Circumstantial evidence suggests Jasione montana is among possible host species. Adults have been found resting in the sun on bare ground and sandy banks, or flying low over short vegetation, when they resemble small solitary bees. Most localities are coastal, and range from steep grassland slopes with bare ground to sand dunes. Occasionally visits flowers

Distribution: A coastal species whose range extends from Hampshire and Dorset westwards and northwards to Anglesey, and which has been recently discovered in Ayrshire. Adults are difficult to locate or catch, so the species is probably under-recorded. The recent increase in records has resulted from the a better understanding of this species requirements, gained during the Dipterists summer field meeting in Devon in 1989
Back to top
View user's profile Send private message Send e-mail
stuart
Site Admin


Joined: 11 May 2005
Posts: 737
Location: Peterborough, UK

PostPosted: Sun May 29, 2005 9:08 am    Post subject: Data sheet from National Review of Diptera, Falk, 1991 Reply with quote

Datasheet from the Review of Scarce and Threatened Diptera, Falk (1991).

EUMERUS SABULONUM (Fallen) NOTABLE

DISTRIBUTION Mainly recorded from the coasts of south western England from Hampshire to North Cornwall, North and South Wales and additionally from Suffolk and a few sites in southwest Scotland (Ayrshire, Wigtownshire).

HABITAT Maritime cliffs, especially those with landslips and sandy head deposits. Less frequently on coastal dunes, and there is also an inland record from the southern margin of Dartmoor. In North Cornwall and Devon, where it was recently taken at five sites, it was closely associated with warm sunny cliff slopes with patches of bare soil and plants such as Sedum anglicum. There may be a requirement for Squills Scilla.

ECOLOGY The larvae are thought to be phytophagous in plant roots or bulbs, though they have yet to be discovered. A good deal of suspscion falls upon Squills Scilla. Adults recorded from June to August.

STATUS Apparently scarce but possibly under-recorded. At least 16 known post 1960 sites: Studland heath (1968) and Purbeck (1986), Dorset; a site in Carmarthenshire (1989); Morfa Harlech (1976) and Morfa Bychan (1976), Merionethshire; Newborough Warren, Anglesey (1976); Ogoff Goch (1987), Careg Wylan (1987), Davidston (1966) and Nolton Haven (1986), Pembrokeshire; a site in Wigtownshire (initialled GR; 1984) and possibly Western Gailes, Ayreshire (exact date unknown); also five sites between Millook (Cornwall) and Clovelly (Devon) in 1989, with evidence to suggest a wide distribution on this coastline. Status revised from RDB3 (Shirt 1987).

THREAT Loss of coastal sites to coastal development and the afforestation or agricultural reclamation of stabilised parts of dune systems. Recreational pressures with dune erosion and the drainage or pollution of slacks.

MANAGEMENT Maintain a full succession of vegetation types on dunes and minimise the disturbance to fore dunes using fences if necessary to allow normal dune fixation.
Back to top
View user's profile Send private message Send e-mail
Display posts from previous:   
Post new topic   Reply to topic    Hoverfly Recording Scheme Forum Index -> The Species All times are GMT
Page 1 of 1

 
Jump to:  
You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot vote in polls in this forum
You cannot attach files in this forum
You cannot download files in this forum


Powered by phpBB © 2001, 2005 phpBB Group