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 2 users online :: 0 Registered, 0 Hidden and 2 Guests

Registered Users: None

[ View complete list ]


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


Helophilus groenlandicus

 
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: Helophilus groenlandicus Reply with quote

Helophilus groenlandicus (Fabricius, 1780)

Identification ease/difficulty: 5

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.

Helophilus groenlandicus (Fabricius, 1780)

Biology: Larvae unknown. Adult habits are little known, but it is an insect of tundra bogs

Distribution: This species is known only from a very few specimens from the north-west coast of Scotland and the Inner Hebrides, although there are as yet unconfirmed recent records from the Isle of Man (Thorpe quoted in Stubbs, 1996). This is a species with a northern Holarctic distribution, occurring in Norway, the Baltic countries, the northern Russia, northern Siberia, Greenland and N.America from Nova Scotia to Alaska and the mountainous parts of Canada and the USA (but not recorded from Iceland) (Speight, 1998). Its status in Britain is not known. It is possibly established in remote areas of north-western Scotland where field recorders are few, or could be a vagrant from further north, although it is unusual for vagrants to be recorded mainly from the north-west
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).

HELOPHILUS GROENLANDICUS Loew VULNERABLE

DISTRIBUTION In Stubbs and Falk (1983) this species is stated as being only known from single specimens from Canna (1936) and Raasay in the Inner Hebrides. However, the Royal Scottish Museum contains a Waterhouse specimen labelled Poll Duchail, I. of Eigg, 9/7/1939.

HABITAT Probably associated with boggy pools on moorland.

ECOLOGY Larvae aquatic probably developing in boggy pools and are of the rat-tailed maggot type. Adults recorded in July.

STATUS A boreal species which could be resident on the Scottish Islands or windblown from northern latitudes. The low level of recording on these islands means it could have been overlooked in recent years. Status revised from RDB3 (Shirt 1987).

THREAT The destruction of bogs on the Scottish islands through peat cutting.

MANAGEMENT Retain such bogs ensuring a high, stable water level and control the amount of peat cutting on such islands.
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