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


Hoverfly Shut Down?!!

 
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conopid



Joined: 03 Sep 2005
Posts: 342
Location: Shrewsbury, Shropshire

PostPosted: Wed Jun 11, 2008 10:30 am    Post subject: Hoverfly Shut Down?!! Reply with quote

I've just come back from three days recording in Shropshire, Herefordshire and Carmarthen and it has been really hard work finding Syrphids. Apart from reasonable numbers of Eristalis species, but by no means big numbers, there have been hardly any Syrphids flying. The weather was quite hot, but even early in the morning, before conditions heated up too much, there were exceptionally low numbers of all diptera (but quadzillions of Sterocoria as usual). Is this perhaps a knock on effect from last summer's abysmal weather? Sad

What have others experienced over the last few days?

One high point - a Microdon myrmicae swept from grassland near Carmarthen. My first ever Microdon in twenty five years! Very Happy

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Nigel Jones
Shrewsbury
Shropshire
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John O'Sullivan



Joined: 05 Oct 2005
Posts: 128
Location: Sandy, Bedfordshire, UK

PostPosted: Wed Jun 11, 2008 5:52 pm    Post subject: Reply with quote

Yes, Nigel, I'm sorry to say that the same situation applies in Bedfordshire. The early season went rather well, but things have ground to a near-halt just recently. It's been particularly discouraging to see certain flowers and shrubs, productive in past year, battered and now over, with hardly a fly having had a chance to use them. I'm sure we are all bound to ask ourselves similar questions when this happens, especially in June. At worst, have things "dropped off a cliff", with hoverflies numbers permanently reduced? Was it last year's bad weather, and can we expect a full recovery eventually? Has the recent spell of cold wet weather removed a cohort just before emergence? Well, I'm hoping, and half-expecting, that when we eventually get some settled, warm and dry weather, the summer species will all emerge and things won't look so bad.

In the meantime, that Microdon of yours must be a comfort! Stephen Plummer and I searched specifically for the genus at Knocking Hoe National Nature Reserve last Saturday, but the best we could do among the ant-hills was Pipizella viduata - which looks a bit like Microdon if you half-close your eyes!

Here's to better times ahead.

John
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Roger K.A. Morris



Joined: 06 Nov 2005
Posts: 1583

PostPosted: Thu Jun 12, 2008 8:55 pm    Post subject: Reply with quote

Hello there Nigel

I had a poor trip last Sunday - possibly too hot and certainly very few hovers. Not sure what the reason but certainly disappointing.

Regards

Roger
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