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 Tephritidae
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| Susan R Walter |
Posted on 24-02-2007 18:36
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 Member Location: Posts: 1794 Joined: 14.01.06 |
I've run this through Unwin's key to the diptera families of Britain and it emerged out the other end as Tephritidae. I wondered if it was Cerajocera ceratocera? From 22 July 2006, east London cemetery park, male (I think), 4mm. Susan |
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| Susan R Walter |
Posted on 24-02-2007 18:39
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Member Location: Posts: 1794 Joined: 14.01.06 |
Another view.
Susan |
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| John Smit |
Posted on 25-02-2007 13:18
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 Member Location: Posts: 565 Joined: 05.10.04 |
Hi Susan, Indeed a Tephritid, and also a Terellia, subgenus Cerajocera, but not the species ceratocera. It is Terellia (Cerajocera) tussilaginis. This species is easily identiefied within this (su  genus, for it has three bands on the wing, with a fourth spot at the basis (not really a band), furthermore in the males it has no modified antennae, contrary to T. (C.) ceratocera, in which the male has an extension on the second antennal segment. The photographed specimen is a male, with no modified antenna and therefore tussilaginis. The larvae feed inside flowerheads of several Arctium species.Cheers, John |
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| Susan R Walter |
Posted on 25-02-2007 15:51
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Member Location: Posts: 1794 Joined: 14.01.06 |
Thanks John. It's useful to know that the spur on the male T (C) ceratocera must be pretty obvious, if you can tell from my fairly poor photos  that my specimen doesn't have it. It was one of the questions I had in my notes for this specimen.
Susan |
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| John Smit |
Posted on 25-02-2007 15:58
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Member Location: Posts: 565 Joined: 05.10.04 |
Hi Susan, The spur is about as long as the third antennal segment, or slightly shorter, so even in these pictures it is fairly easy to see  John |
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| diphascon |
Posted on 25-02-2007 16:13
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Member Location: Posts: 85 Joined: 26.07.05 |
John Smit wrote: The larvae feed inside flowerheads of several Arctium species. Cheers, John Hi, I read about a few rearings from Cirsium sp. as well, but nevertheless, the name "tussilaginis" seems rather misleading to me cheers - martin |
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| John Smit |
Posted on 25-02-2007 16:45
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Member Location: Posts: 565 Joined: 05.10.04 |
Hi Martin, The name tussilaginis, is indeed misleading. I would love to have some references on the rearings from Cirsium sp., if you have some I would greatly appreciate it! John |
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| diphascon |
Posted on 25-02-2007 19:03
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Member Location: Posts: 85 Joined: 26.07.05 |
John Smit wrote: Hi Martin, The name tussilaginis, is indeed misleading. I would love to have some references on the rearings from Cirsium sp., if you have some I would greatly appreciate it! John Bernhard Merz, Diptera-Tephritidae. Insecta Helvetica Fauna Vol. 10 (1994), in German. Page 89-90. "Im Ausland [that is: outside of Switzerland] an A[rctium]. lappa und je einmal aus den Bl?tenk?pfen von Cirsium arvense und den Stengeln von C. vulgare gezogen." No further reference is given. Hope that helps - martin |
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| John Smit |
Posted on 25-02-2007 21:51
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Member Location: Posts: 565 Joined: 05.10.04 |
Hi Martin, Thanks! I should check my sources better next time. Though I trust you understand that 'je einmal' means that it both happend only once and are therefore exceptions. Perhaps that's the reason it didn't stick in my mind... Cheers, John |
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| diphascon |
Posted on 25-02-2007 23:37
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Member Location: Posts: 85 Joined: 26.07.05 |
John Smit wrote: Hi Martin, Thanks! I should check my sources better next time. I KNEW you had this in your shelf  cheers - martin |
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