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 Choerades femoratus?
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| PetterAndersson |
Posted on 15-09-2018 22:57
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Member Location: Posts: 5 Joined: 22.08.17 |
Hi, This Choerades specimen was collected in July at Botkyrka, south of Stockholm, Sweden. Using the new german robberfly book, I end up at C. femoratus, which would be a first for the province of Södermanland. I find the white coloration of the facial hair and the length of the first antennal segment in relation to the second segment to be distinctly different in comparison to the four specimens of C. marginatus that I have in my personal collection. Comments on the ID would be much appreciated. Thanks in advance, Petter PetterAndersson attached the following file: cfem.pdf |
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| Quaedfliegh |
Posted on 17-09-2018 16:54
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 Member Location: Tilburg Netherlands Posts: 2208 Joined: 18.05.10 |
Picture?
Greetings, Reinoud Field guide to the robber flies of the Netherlands and Belgium: https://www.jeugdbondsuitgeverij.nl/product/field-guide-to-the-robberflies-of-the-netherlands-and-belgium/ https://www.nev.nl/diptera/ |
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| PetterAndersson |
Posted on 17-09-2018 17:36
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Member Location: Posts: 5 Joined: 22.08.17 |
I don´t know why the picture doesn´t show, but there is an attached file (cfem.pdf) at the bottom line of my post. I hope you can see it. This is my first post on this forum, and maybe there is a better way of uploading pictures (I used the attachment option)? All the best, Petter |
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| Quaedfliegh |
Posted on 17-09-2018 23:03
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Member Location: Tilburg Netherlands Posts: 2208 Joined: 18.05.10 |
Aha, I had look at the pictures, but I'm not yet convinced, the face seems to have yellowish sheen to it , in femorata it is usually white. Also the antennae, the first segment doesn't seem to be more than 3x the second segment which would also point at marginata. Maybe this will help adding pictures: (Borrowed from FAQ) How do I attach a file (image) to my post? At the bottom of a new message you have the option to attach a document. By clicking on the 'Browse' button you can navigate to the desired file on the local computer and click on 'Open'. When you post the message, the attachment will be uploaded. An attached image is not visible when previewing your message. Attaching files to forum posts is restricted to the following types: gif - jpg - png - zip - rar - tar. Please make sure that you use lower case, because attachments with extensions in upper case (capitals) are rejected. The maximum size is 200000 bytes. Other requirements are: no spaces in the file name, not dots in the file name other than the one in front of the file extension and only alphanumerical characters and '-' and '_' are allowed. Edited by Quaedfliegh on 17-09-2018 23:44 Greetings, Reinoud Field guide to the robber flies of the Netherlands and Belgium: https://www.jeugdbondsuitgeverij.nl/product/field-guide-to-the-robberflies-of-the-netherlands-and-belgium/ https://www.nev.nl/diptera/ |
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| PetterAndersson |
Posted on 18-09-2018 19:25
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Member Location: Posts: 5 Joined: 22.08.17 |
Ok, so this may still be a marginatus? I thought it was so different from the marginatus specimens I have. I will have another look at it, and try to get some better pictures. Thanks Reinoud Edited by PetterAndersson on 18-09-2018 19:26 |
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| Danny Wolff |
Posted on 22-09-2018 18:40
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 Member Location: Germany Posts: 329 Joined: 27.05.04 |
Hello Petter, I think you are probably right with Choerades femorata. I see mostly silver white hairs on the face, a rather long first segment of the antennae and a quite typical lateral head profile. Maybe you can take a picture where the first and second segment of the antennae are in the same level, so that their length could be compared better? Greetings, Danny |
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| PetterAndersson |
Posted on 23-09-2018 16:30
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Member Location: Posts: 5 Joined: 22.08.17 |
Hi again Danny and Reinoud, Here comes some more pictures. The first is close-up on the antennae, where the length of the antennal segments (hopefully) is more visible. When I measure the segments on the screen, the first segment appears to be approximately 3,5-3,6 times the length of the second. I also upload one more picture on the facial hairs. All the best, Petter PetterAndersson attached the following image:  [153.2Kb] Edited by PetterAndersson on 23-09-2018 16:41 |
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| PetterAndersson |
Posted on 23-09-2018 16:31
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Member Location: Posts: 5 Joined: 22.08.17 |
And here is the face. /Petter
PetterAndersson attached the following image:  [176.4Kb] |
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