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View Thread :: Identification queries :: Diptera (adults)
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Tephritidae, Dioxyna bidentis again? On Bidens frondosa
#1 Print Post
Posted on 03-12-2019 21:31

Location: Bulgaria
Posts: 11
Joined: 30.06.16

Is this Dioxyna bidentis again - as in my previous post? NW Bulgaria, 12.09.2018
I thought i would post these too, because they are on a different plant - Bidens frondosa, the host that gave them the specific epithet.

Original post on iNaturalist with more photos:
Edited by exonie on 03-12-2019 21:59
#2 Print Post
Posted on 04-12-2019 11:32
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Posts: 3066
Joined: 29.12.07

Yes, it is!
John Carr
#3 Print Post
Posted on 04-12-2019 15:47
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Location: Massachusetts, USA
Posts: 7839
Joined: 22.10.10

exonie wrote:
Is this Dioxyna bidentis again - as in my previous post? NW Bulgaria, 12.09.2018
I thought i would post these too, because they are on a different plant - Bidens frondosa, the host that gave them the specific epithet.

The name probably comes from a different species of Bidens. B. frondosa is native to America and Dioxyna bidentis is European. I had some 3 meter tall Bidens frondosa growing next to my house last summer. They attracted some Agromyzidae but no Tephritidae that I could see.
#4 Print Post
Posted on 04-12-2019 15:59

Location: Bulgaria
Posts: 11
Joined: 30.06.16

Thanks again Val.

John Carr, you are right - Bidens frondosa is introduced in Europe. I see records of this fly from several species of Bidens - seems this is its favorite genus of plants :-)
Edited by exonie on 04-12-2019 16:43
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