Diptera.info :: Identification queries :: Diptera (adults)
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 Terellia serratulae?
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| Rui Andrade |
Posted on 04-09-2008 23:01
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 Member Location: Portugal Posts: 3123 Joined: 19.06.07 |
I found some specimens of Terellia sp. in a thistle. They were very agitated and busy . I think they could be Terellia serratulae, is that correct?I made a small video  : http://www.youtub...B6w&fmt=18     |
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| Nosferatumyia |
Posted on 05-09-2008 05:32
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 Member Location: Posts: 3487 Joined: 28.12.07 |
You are right. Terellia serratulae L. (it is a complex of species, but probably it is serratulae itself) Wonderful pictures! Do you know also the thistle species?
Val |
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| Rui Andrade |
Posted on 05-09-2008 11:24
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Member Location: Portugal Posts: 3123 Joined: 19.06.07 |
Nosferatumyia wrote: You are right. Terellia serratulae L. (it is a complex of species, but probably it is serratulae itself) Wonderful pictures! Thank you Valery .Do you know also the thistle species? Unfortunately no  . But I would love to know how to identify the commonest species of thistles. Is there any good forum to id plants? |
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| jorgemotalmeida |
Posted on 05-09-2008 11:40
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 Member Location: Viseu - PORTUGAL Posts: 9296 Joined: 05.06.06 |
YES. infojardin. you never appeared there anymore.  |
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| Rui Andrade |
Posted on 05-09-2008 13:40
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Member Location: Portugal Posts: 3123 Joined: 19.06.07 |
jorgemotalmeida wrote: YES. infojardin. you never appeared there anymore. Well, I think infojardin is a little bit confusing because it's difficult to track the threads and they don't allways answer. It was the first time I really paid more attention to the courtship of tephritids. I thought it was very interesting the way the males pointed the pheromone sacs towards the females. The males allways pointed the sac that was on the female's side. As shown in the video, as soon as the female ran away the inflated sac deinflated .Valery I think that, by comparing photos on the net, the thistle belongs to the genus Cirsium. One more photo: 
Edited by Rui Andrade on 05-09-2008 13:42 |
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| Nosferatumyia |
Posted on 05-09-2008 15:48
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Member Location: Posts: 3487 Joined: 28.12.07 |
>the thistle belongs to the genus Cirsium. Typically, Terellia serratulae is associated with Carduus nutans and allied species, whereas T. longicauda Meigen feeds on Cirsium eriophorum. The female on the picture has ovipositor 2/3 as long as in T. longicauda, and almost as long as in T. serratulae. There are several serratulae-like populations of uncertain status over Europe and Central Asia, which need revision including a lot of morphometry, electrophoresis, DNA-sequencing, etc. to clarify their status. I am keeping to accumulate these data still, so maybe some day... But so far - it must be treated as T. sp. cf. serratulae. Val |
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| Rui Andrade |
Posted on 05-09-2008 18:47
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Member Location: Portugal Posts: 3123 Joined: 19.06.07 |
Ok, thank you once more. |
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