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This would be a very good record, if it is right...it is a rare species, only found here quite recently, I think. It looks right, but it's not a species I know. Maybe worth adding the picture on Dipterists Forum?
My Flickr photos...
Thanks ophrys,I'll give that a bash.
That does look like L. vitripennis, and it's from an unusual habitat - except that on Friday evening I got a very similar looking specimen from another river valley nature reserve not a million miles away, in High Wycombe. I'll try to get some photos of mine added tomorrow, and once I've properly checked the specimen hopefully I'll be able to confirm yours (it's not a species I've seen before).
So perhaps L. vitripennis is expanding the range of habitats it can use, or perhaps it just happens to have been dispersing widely in the hot weather this weekend? More records needed!
L. vitripennis was only recognised as a British species in 1996, and most of the dozen or so previous British records have been from dry chalk grassland, including from the North Downs and the Chilterns.
Entomologist and biological recorder
Having checked my specimen I can confirm that both yours and mine are Leptarthrus vitripennis, which make for an extraordinary extension of its known habitat! Will be fascinating to see if anyone finds more of them.
My observation is at:
There a great comparison between L. vitripennis and L. brevirostris on Fritz Geller-Grimm's site:
Thankyou Martin ,it is good to know the correct ID.
Currently Reinoud van den Broek and I are working on a Photo-guide of Dutch and Belgian Robberflies. We will add a few species and then the English and Danish species are also complete. It’s will be a low-res pdf-file for free for everyone who’s interested. Just to spread some enthousiasm for these beautiful animals (and we hope that more people will record their observations).
Well, I guess you know already what the question is..
I found your photo of Leptarthrus vitripennis and we would be very pleased if we may use them for our ‘book’. Off course your name is added (when it's oké, please tell me which name to add).
When we've finished our 'book' you will recieve the pdf.
Regards, André Schulten
Lat/Lng: 51.6204, -0.5042
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