File:Male Liancalus virens (dorsal view) (11623156293).jpg
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Summary
[edit]DescriptionMale Liancalus virens (dorsal view) (11623156293).jpg |
Long legged Fly (7mm long) Liancalus virens (Scopoli, 1763) Alternative names: Dolichopus regius (Fabricius, 1805), Musca virens (Thunberg, 1789), Liancalus regius (Fabricius, 1805) According to the Fonseca 1978 key to British Dolichopodidae flies, Liancalus is characterised by having 6 equally strong scutellar bristles, 6 dorsocentral bristles; outer crossvein very oblique and bends of the discal vein very obtuse and smoothly rounded. The only British species is L virens which is described as a large species (6-7mm) with long, slender, rather sparsely and weakly bristled legs, and conspicuously long wings, which are somewhat variably brownish-marked. This colourful species is the largest of the dolichopodid or long legged flies in north western Europe. It is recognised as a marine insect "found in algae on rocks very close to the splash zone" and also in inland areas far from the sea. Inland, it lives amongst the mosses, liverworts and algae growing under bridges and beside waterfalls and fast running water. I think this specimen may have come from a little waterfall that leads into a pond in Christchurch Park, about 400 metres from my house. I found the fly in my conservatory at Grid Ref TM16644502, here in Ipswich, East Suffolk. The ID has been agreed by Tony Irwin, Senior Curator of Natural History at Norwich Museums, who told me of a previous record of this species in a garden in Ipswich in 1908 that was subsequently marked as an error. This being the case, this would be the first record of this fly in Suffolk. Thanks to www.naturespot.org.uk/species/liancalus-virens, eol.org/pages/807437/details and especially Tony Irwin www.dipteristsforum.org.uk/viewtopic.php?pid=12753 for this information. |
Date | |
Source | male Liancalus virens (dorsal view) |
Author | Martin Cooper from Ipswich, UK |
Camera location | 52° 03′ 40.16″ N, 1° 09′ 32.87″ E | View this and other nearby images on: OpenStreetMap | 52.061156; 1.159131 |
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This image was originally posted to Flickr by Martin Cooper Ipswich at https://www.flickr.com/photos/92899351@N08/11623156293. It was reviewed on 18 March 2015 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0. |
18 March 2015
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current | 18:09, 18 March 2015 | 2,785 × 2,785 (1.24 MB) | Jacopo Werther (talk | contribs) | Transferred from Flickr via Flickr2Commons |
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Compression scheme | Uncompressed |
Pixel composition | RGB |
Orientation | Normal |
Number of components | 3 |
Horizontal resolution | 557 dpi |
Vertical resolution | 557 dpi |
Software used | Adobe Photoshop Elements 11.0 Windows |
File change date and time | 20:21, 27 December 2013 |
Color space | sRGB |
Date metadata was last modified | 20:21, 27 December 2013 |
Date and time of digitizing | 19:04, 27 December 2013 |
Unique ID of original document | xmp.did:B00FABBC296FE311BA7CB35CC0B10F30 |