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The Hoverfly Thread

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Old Thursday 19th May 2005, 21:37   #26
steve covey
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Smile A Real Beauty

I found this today at Morgans Hill [a Wilts Wildlife Trust downland reserve]. It's Xanthogramma citrofasciatum. It's a real cracker and one I've been looking out for since I became interested in Hoverflies.
Cheers,
Steve.
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Old Monday 23rd May 2005, 13:34   #27
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Question 3 for ID

Hi,
One of these is Helophilus pendulus, but I don't recognise the others but they look as if they should be identifiable. I have larger images on my website:

http://www.eimagesite.net/s1/gst/run...26,925,924,920

Thanks in advance,
Hugh
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Old Monday 23rd May 2005, 18:05   #28
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Quote:
Originally Posted by 138mph
Hi,
One of these is Helophilus pendulus, but I don't recognise the others but they look as if they should be identifiable. I have larger images on my website:

http://www.eimagesite.net/s1/gst/run...26,925,924,920

Thanks in advance,
Hugh
Hello Hugh,
not a complete answer but here goes [from left to right].
Helophilus pendulus; Myathropa florea; Parahelophilus sp. [there are three species in the genus - difficult to separate, particularly females. In Stubbs and Falk they recommend catching several as there are usually more than one species flying together!]They all associate with wetland areas using eg. bulrush. Two are common[ish] the other scarce so worth trying again and maybe taking voucher specimens. Do the RSPB have a species list for the reserve?
And finally another Helophilus, probably hybridus.
It might pay to post pics of the two I'm uncertain of to the UK-Hoverflies yahoo group. Steven Falk is a member as are several other very good Hoverfly experts [I'm a beginner by comparison ]
Most hoverfly species are notoriously difficult to ID from photos I'm afraid.
HTH,
I've attached a pic of Myothropa florea I took last autumn, for interest.
Cheers,
Steve.
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Old Saturday 28th May 2005, 20:21   #29
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Smile

Found a new species of Hoverfly [for me anyway] yesterday in some damp 'swampy' woodland near Swindon. It was Xylota segnis. The attached photo doesn't show the distinctive abdomen well as it's one of those species that always folds it's wings over it's abdomen at rest.
Cheers,
Steve.
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Old Thursday 30th June 2005, 10:17   #30
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Another Myathropa florea I think plus I couple I am struggling with. A Syrphus with dark thighs and a Chrysotoxum, which I think might be intermedium but not sure. Advice?
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Old Thursday 30th June 2005, 10:21   #31
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Volucella pellucens is plentiful at the moment around here patrolling woodland rides and feeding at brambles. They will often hover very close to you at head height. There some really good pictures here:
http://weedworld.blogspot.com/2005/0...-hoverfly.html
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Old Tuesday 5th July 2005, 12:55   #32
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Quote:
Originally Posted by 138mph
Hi,
I think that this is a hoverfly - any offers on an ID?
Thanks,
Hugh

Going back a few posts:
Pipiza, probably noctiluca as this is the most common species around these parts, but I'd need to see a specimen - its a tricky genus.

Neil

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Old Tuesday 5th July 2005, 13:50   #33
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Do you fancy having a go at these?
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Old Tuesday 12th July 2005, 20:58   #34
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Here's a couple I caught at it earlier....
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Old Wednesday 13th July 2005, 08:10   #35
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I've had the second of my two confirmed as Chrysotoxum cautum but the other will have to remain Syrphus sp.
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Old Wednesday 13th July 2005, 15:14   #36
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Platycheirus

A couple of pictures of a Hoverfly that I have tentatively keyed to Platycheirus discimanus. I am only just getting used to these keys so confirmation (if possible) would be welcome. There is a Platycheirus key here:
http://home.hccnet.nl/mp.van.veen/KE...pltch_key.html
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Old Wednesday 3rd August 2005, 14:54   #37
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Are these Eupodes luniger and Sphaerophoria scripta?
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Old Monday 8th August 2005, 14:57   #38
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Volucella zonaria and another Chrysotoxum

A couple more from a weekend near Winchester, which provided a few hoverfly and cricket firsts for me.

I think the first of these is Volucella zonaria, a large hornet mimic. The reddish thoracic dorsum and scutellum are indicative even if the size isn't obvious.

The secon is a Chrysotoxum species, perhaps arcuatum?

I'd still be grateful for any comments on the previous insects.

Ta!
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Old Monday 8th August 2005, 19:13   #39
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Quote:
Originally Posted by brianhstone
A couple more from a weekend near Winchester, which provided a few hoverfly and cricket firsts for me.

I think the first of these is Volucella zonaria, a large hornet mimic. The reddish thoracic dorsum and scutellum are indicative even if the size isn't obvious.

The secon is a Chrysotoxum species, perhaps arcuatum?

I'd still be grateful for any comments on the previous insects.

Ta!
Hello Brian,
V. zonaria female and I'm pretty sure the Chrysotoxum is festivum. You're getting some cracking species lately. I saw C. bicinctum the other day and at last managed to get some halfway decent pics - they usually don't sit still long enough Re your previous posting, I'm 99% sure the Eupeodes is luniger and definately Sphaerophoria scripta for the other.
Cheers,
Steve.
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Old Saturday 13th August 2005, 17:24   #40
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Can anyone help with this hoverfly? I've gone through the websites that I know about and cannot find a match, and it's so distinctive I didn't think I would have a problem. Photo taken this morning on a sweet pea flower in the garden.
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Old Sunday 14th August 2005, 19:02   #41
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Thanks very much for your comments Steve. Bicinctum looks distinctive. I think these Chrysotoxum species are among the most charismatic of the hovers.

Sorry I can't help immediately with your's SarahK but it looks o have got dusted all over with something.
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Old Monday 15th August 2005, 09:00   #42
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Brian - I think it might have been dead and going a bit mouldy or maybe diseased - in retrospect I should have poked it to see but I generally have a policy of not disturbing things if possible.

By the way, I like the pictures of Helophilus pendulus on your website - the one in profile is amazing.
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Old Tuesday 16th August 2005, 20:24   #43
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Quote:
Originally Posted by SarahK
Can anyone help with this hoverfly? I've gone through the websites that I know about and cannot find a match, and it's so distinctive I didn't think I would have a problem. Photo taken this morning on a sweet pea flower in the garden.
Hi Sarah,
I think your 'mouldy fly' is a female Platycheirus - possibly angustatus as this is the most slender species of the group. It should be quite small [about 8mm long].
Cheers,

Steve.
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Old Wednesday 17th August 2005, 08:54   #44
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A very BIG hoverfly!

On another thread I asked if a hoverfly I photographed (copied here) could be identified. It was huge and I'm told it is Volucella zonaria, a hornet mimic. I live in Wiltshire, could someone please tell me the status of this hoverfly in the UK? Is it resident or a migrant? Is it common?

Many thanks!
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Old Wednesday 17th August 2005, 10:40   #45
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Quote:
Originally Posted by Pterodroma
On another thread I asked if a hoverfly I photographed (copied here) could be identified. It was huge and I'm told it is Volucella zonaria, a hornet mimic. I live in Wiltshire, could someone please tell me the status of this hoverfly in the UK? Is it resident or a migrant? Is it common?

Many thanks!
Hello from another Moonraker
Yes, definitely zonaria. I've had it once in my Swindon garden. I've attached a current [today] posting from the hoverflies yahoo group. Not sure if the link will work. You will probably need to register with the group to access it.

"Thanks to the various people who sent me additional records. I have updated the maps for both V. zonaria and V. inanis comparing the distribution up to 1994 with that for the most recent 10 years. These are in the photo-album on this eGroup

Volucella zonaria
http://photos.groups.yahoo.com/group/uk-hoverflies/
HTH,
Steve.
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Old Wednesday 17th August 2005, 11:22   #46
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Brilliant Steve. I gave seen innanis a couple of times around here, including at least one in my garden (but none so far this year). Looks like I need to keep a look out for zonaria too.
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Old Wednesday 17th August 2005, 14:06   #47
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Quote:
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Yes, definitely zonaria. I've had it once in my Swindon garden. I've attached a current [today] posting from the hoverflies yahoo group. Not sure if the link will work. You will probably need to register with the group to access it. Steve.
Many thanks Steve. I've registered with the yahoo group and accessed the range map.

I've been back to the same Buddleia only to find a different Volucella there - pellucens I believe? See the pic below. Also I'm absolutely new to these hoverflies - silly question maybe, but how do you tell a real bee from a mimic hoverfly. For example what is the other insect below, on the same Buddleia?

Cheers
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Old Wednesday 17th August 2005, 14:31   #48
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Yes to pellucens.

The other is a hoverfly and is an Eristalis species. Hopefully Steve will be along to give us some more info.

The easiest pointer to a hover rather than a bee is the eyes.

This is an excellent intro to hoverflies:
http://www.gardensafari.net/english/hoverflies.htm
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Old Wednesday 17th August 2005, 17:49   #49
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Quote:
Originally Posted by Pterodroma
Many thanks Steve. I've registered with the yahoo group and accessed the range map.

I've been back to the same Buddleia only to find a different Volucella there - pellucens I believe? See the pic below. Also I'm absolutely new to these hoverflies - silly question maybe, but how do you tell a real bee from a mimic hoverfly. For example what is the other insect below, on the same Buddleia?

Cheers
As Brian said the first two are pellucens. The last is Eristalis pertinax [mostly because of the pale front and mid tarsi]. The eyes are definately a good field characteristic - bee's being much smaller. You can also sex hoverflies by their eyes as males eyes meet at the top whereas females have a gap. Also they have two wings to the bee's four [although not that obvious as the bees wings are 'hooked' up and look like a single wing. Also, to use the birders parlance, the jizz is different; by and large hoverflies move around much more quickly with often jerky erratic action - and of course, many of the species hover a lot
If you wish to get more seriously involved then a 'must have' is British Hoverflies by Alan E. Stubbs and Steven J. Falk [around £30].
Cheers,

Steve.
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Old Thursday 18th August 2005, 08:52   #50
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Thanks Brian and Steve, for the help with the hoverflies over the last couple of days
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