Colletes hederae

Systematics and other topics

Colletes hederae

Postby StuartR on 16 Sep 2008, 00:49

Colleagues

The Colletes hederae season is now in full flow. I am certain that it would be relatively easy to gather distribution data across a very broad front this September and October. The species is clearly expanding its range across southern Germany and the adjacent parts of Switzerland and Austria, and also in the south of UK (where it was recorded for the first time in 2001). I also have records from Athens and Lesvos in the last couple of years.

I should be very interested to receive full details of any records of this species from any part of its range this year, and I would encourage all visitors to the HymIS board to participate in this collaborative data gathering. I can easily prepare distribution maps of known records at a European scale as and when records come in.

Good Hunting

Stuart Roberts
Attachments
hederae_20080915.JPG
Distribution of Colletes hederae based on existing records
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Re: Colletes hederae

Postby crex on 16 Sep 2008, 08:06

National Biodiversity Recording Systems (at least a few of them, to check for certain species occurrences)
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Re: Colletes hederae

Postby StuartR on 16 Sep 2008, 10:06

Thanks Crex for that. There is no doubt that the UK NBN is a very useful source of data but in the case of bees, wasps and ants they get their data primarily from BWARS, so...... (as Chair of BWARS) I know the UK dataset very well and have the majority of records on my computer anyway.

If anyone needs to look at UK aculeate distributions, the NBN has about 370k lines of aculeate data, much of it on bees. Access is open to all at 10km resolution.

As far as C. hederae is concerned, key areas for searching are clearly France, Belgium, Luxembourg and western Germany.
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Re: Colletes hederae

Postby Patrick Lhomme on 17 Sep 2008, 00:10

I've seen some last year and also this year at this point :
Vieux viel (Ille-et-Vilaine, Brittany, France)
01°32'42"W - 48°30'40"N
on Hedera helix

Patrick
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Re: Colletes hederae

Postby Patrick Lhomme on 17 Sep 2008, 00:13

precisely the 28.IX.2007 and the 15.IX.2008

Patrick
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Re: Colletes hederae

Postby StuartR on 17 Sep 2008, 00:50

Patrick

Your dot now added in blue. Many thanks for this

Stuart
Attachments
hederaeEU_20080916.GIF
Colletes hederae updated
Stuart Roberts
www.bwars.com
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Re: Colletes hederae

Postby Christian on 20 Sep 2008, 18:47

There are also some new records (from 2007) in northern Switzerland. I know only Thun (Lake Thun, near Interlaken), what is refered by a photo on www.galerie.hymis.de. Also I thought that there are more records from NW-Spain, but I don't remember details.

Do you know Michael Kuhlmann, an expert for Colletes, now in London, British Museum? He will have these information. I may give you Email adress by email. My email: christian(@)bembix.de

Regards, Christian
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Re: Colletes hederae

Postby StuartR on 21 Sep 2008, 16:19

Hi Christian

Many thanks for your post. I know Michael well and I shall be seeing him next weekend in Cardiff - in fact we are collaborating on a couple of projects related to Colletes and climate change.

I am posting an updated map with blue dots indicating the very latest data I have received.
Attachments
hederaeEU_20080918.GIF
Colletes hederae; updated 20 Sep 2008
Stuart Roberts
www.bwars.com
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Re: Colletes hederae

Postby StuartR on 23 Sep 2008, 19:54

Hi Everyone

New data arrived today. I attach the updated map
Attachments
hederae_20080923.GIF
Colletes hederae; updated 23 Sep 2008
Stuart Roberts
www.bwars.com
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Re: Colletes hederae

Postby LakeSide on 02 Oct 2008, 13:40

I don't know if you have any Dutch info about C.hedeae yet, but the following link shows all the sightings of this species in Holland in 2008. The link is to the Dutch site waarneming.nl (translation: sighting.nl), where sightings of all animal species in Holland are listed.

http://waarneming.nl/soort/maps/24364?from=1980-01-01&to=2008-10-02&grid=1000&prov=0

A close-up: http://waarneming.nl/soort/maps/24364?from=1980-01-01&to=2008-10-02&grid=1000&prov=12

Both red dots represent 16-20 sightings.

I hope this information is of interest to you,

Cheers,

Jaco Visser
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Re: Colletes hederae

Postby StuartR on 02 Oct 2008, 20:27

Hi Jaco

Yes.. I have these ones from Walcheren. The sites are Westkapelle and Domburg. I harvested this data from FlickR.

Many thanks for the map though - looks good

Best wishes, Stuart
Stuart Roberts
www.bwars.com
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Re: Colletes hederae

Postby StuartR on 14 Oct 2008, 13:03

Quite a lot of records to add to the map. Some of the blue dots are merely updating records from previous years, but there are a number that are completely new, especially in France. Please keep the data flowing in!

Stuart
Attachments
hederaeEU_20081014.GIF
Map updated 14 Oct 2008
Stuart Roberts
www.bwars.com
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Re: Colletes hederae

Postby StuartR on 08 Dec 2008, 18:05

The last update of the year (unless correspondents here can improve the map further!)
Attachments
hederaeEU_20081208.JPG
Updated 8 December 2008
Stuart Roberts
www.bwars.com
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