Diptera.info :: Identification queries :: Diptera (adults)
 exotic Dacus, in my livingroom
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| Robert Heemskerk |
Posted on 15-05-2009 15:13
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 Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
hi flyforum, Next to my window, I found this rather large Tephritidae ? I've never seen such Tephritidae(?)-fly size: 8-10mm What kind of fly is this? Amsterdam 15-05-2009 Robert Heemskerk attached the following image:  [87.38Kb] Edited by Robert Heemskerk on 16-05-2009 23:02 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Paul Beuk |
Posted on 15-05-2009 15:20
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 Super Administrator Location: Netherlands Posts: 19403 Joined: 11.05.04 |
Looks like an exotic Bactrocera...
Paul - - - - Paul Beuk on https://diptera.info |
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| Nosferatumyia |
Posted on 15-05-2009 15:35
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 Member Location: Posts: 3569 Joined: 28.12.07 |
Looks to be a Dacus: abdominal tergites seem to me to be fused. An Asclepiadaceae associated groups? If from the Near East, it could be D. longistylatusWd.
Val |
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| Robert Heemskerk |
Posted on 15-05-2009 20:11
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Thank you Paul and Valery for your comment. Strange appearance  I've collected the fly anyway.. Hereby another view of this fly, sitting and licking our net curtain Robert Heemskerk attached the following image:  [160.38Kb] Edited by Robert Heemskerk on 15-05-2009 20:12 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Nosferatumyia |
Posted on 15-05-2009 20:42
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Member Location: Posts: 3569 Joined: 28.12.07 |
Robert, and WHERE is it from? Amsterdam?
Val |
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| Robert Heemskerk |
Posted on 15-05-2009 20:55
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Ohw..., sorry  Yes it's from Amsterdam, today Edited by Robert Heemskerk on 15-05-2009 20:55 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 16-05-2009 14:50
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
this afternoon I found another 6 of them! Now I have got 2 females and 5 males. And I am a bit sure they come from our bunch of flowers. In this bunch there are big seed pods, that could explain there appearance. All these flies I collected now in a bottle and they are still alive. Hereby a male of these flies Robert Heemskerk attached the following image:  [94.9Kb] Edited by Robert Heemskerk on 16-05-2009 14:50 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 16-05-2009 16:48
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
This could be the hostplant of these flies?
Robert Heemskerk attached the following image:  [162.59Kb] Edited by Robert Heemskerk on 16-05-2009 16:49 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 16-05-2009 18:24
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
John Smit is interested in the flies. I'm gonna sent them to John. Here is a group of zeven (counter is now on 8!) Robert Heemskerk attached the following image:  [119.52Kb] Edited by Robert Heemskerk on 16-05-2009 18:39 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Sundew |
Posted on 16-05-2009 19:49
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 Member Location: Berlin and Baden-Württemberg, Germany Posts: 3939 Joined: 28.07.07 |
The seed pods clearly belong to Asclepiadaceae (now subfamily Asclepioideae of Apocynaceae), so Valery's question whether these plants are nearby can be positively answered ! However, this species is not native to the Netherlands...
Edited by Sundew on 16-05-2009 19:51 |
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| Nosferatumyia |
Posted on 16-05-2009 21:34
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Member Location: Posts: 3569 Joined: 28.12.07 |
I am pretty sure John can easily IDfy this stuff with Ian White's recent keys. Somehow I suspect that the plant is from Africa rather than from Asia. In any case, it is a Dacus, not Bactrocera. Edited by Nosferatumyia on 16-05-2009 21:37 Val |
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| Sundew |
Posted on 16-05-2009 23:12
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Member Location: Berlin and Baden-Württemberg, Germany Posts: 3939 Joined: 28.07.07 |
I suppose that the plant is Gomphocarpus physocarpus, native to Kenya, Tanzania, Mozambique, South Africa and Swaziland. |
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| Maddin |
Posted on 17-05-2009 02:06
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 Member Location: Sacramento CA USA Posts: 194 Joined: 30.06.05 |
Very interesting find. you might want to keep two specimens in 90% alcohol, because there are many people interested in the DNA of these flies, especially of the introduced ones... Cheers Martin Martin Hauser |
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| Robert Heemskerk |
Posted on 18-05-2009 10:28
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
Checking the key of Ian White, I think Dacus frontalis fits well. (but it isn't, see note*) - Wing without any infuscation along any crossvein. Male with a pecten. - Midfemur distinctly darker in apical half Obvious to see is a microtrichose area in base of cell br, but I am not sure this is a characteristic. The flies are sent to John anyway.. * (edit: but it is definitely not Dacus frontalis, ''the host data rules it out!'' (Ian White) Robert Heemskerk attached the following image:  [112.79Kb] Edited by Robert Heemskerk on 18-05-2009 11:41 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Robert Heemskerk |
Posted on 18-05-2009 11:30
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Member Location: Amsterdam, Netherlands Posts: 2082 Joined: 17.10.05 |
and a dorsal view of the male
Robert Heemskerk attached the following image:  [127.05Kb] Edited by Robert Heemskerk on 18-05-2009 11:30 Greeting, Robert Heemskerk ---- WWW: http://robertheem...ndedag.htm --- |
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| Maddin |
Posted on 18-05-2009 17:23
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Member Location: Sacramento CA USA Posts: 194 Joined: 30.06.05 |
Ian White (white<dot>dacus<at>btinternet<dot>com) just emailed me after I told Marc about the fly. He wrote :"Marc De Meyer forwarded the web enquiry regarding the fly to me. In so far as it is possible to ID a fly from a photo, it is Dacus siliqualactis, which is common in East Africa in that host." Thanks Ian, that helps a lot! Martin Martin Hauser |
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| John Smit |
Posted on 01-06-2009 10:11
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 Member Location: Utrecht Posts: 565 Joined: 05.10.04 |
Hi all, After having received the specimens (thanks Robert) I can confirm it is Dacus siliqualactis. And yes Martin, four of the specimens ended up in 96% alcohol for DNA analysis. John |
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