The Society for the study of flies (Diptera)
Affiliated to the British Entomological and Natural History Society (BENHS)
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#1 2018-09-21 17:59:49
- colinleb
- DF Members
- Name: Colin Le Boutillier
- From: Luton, Bedfordshire
- Registered: 2008-03-03
- Posts: 195
Delia sp
Is this Delia platura please? Beds. 14 September 2018.
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#2 2018-09-22 11:02:28
- Laurence Clemons
- DF Members
- Name: Laurence Clemons
- Registered: 2008-04-02
- Posts: 373
Re: Delia sp
If there is no fan of hairs on the middle metatarsus then you are probably correct.
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#3 2018-09-23 18:50:36
- colinleb
- DF Members
- Name: Colin Le Boutillier
- From: Luton, Bedfordshire
- Registered: 2008-03-03
- Posts: 195
Re: Delia sp
Thank you Laurence. Here are two photos of the middle tarsi from different angles. No fan that I can see.
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#4 2018-09-25 14:05:38
- Laurence Clemons
- DF Members
- Name: Laurence Clemons
- Registered: 2008-04-02
- Posts: 373
Re: Delia sp
In Delia florilega, the other common species with a row of small setulae on the hind tibia, the fan is distinct and curved so this is most probably Delia platura.
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#5 2018-09-25 15:36:36
- colinleb
- DF Members
- Name: Colin Le Boutillier
- From: Luton, Bedfordshire
- Registered: 2008-03-03
- Posts: 195
Re: Delia sp
Thanks again Laurence.
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#6 2018-09-28 12:02:14
- Michael Ackland
- DF Members
- Name: Michael Ackland
- Registered: 2008-06-14
- Posts: 191
Re: Delia sp
It is Delia platura, the shape of the cercal plate and surstyli are slightly different to Delia florilega. I attach photos of the mid tarsal fringe and genitalia of Delia florilega for comparison.
The hypopygium photo is apparently too large So I will submit later when I have sorted it out!
I get a message to tell me why it won't upload, but it only lasts 3 seconds on the screen, so I don't know the reason. The photo is well below the limits stated, in fact less than those for the other photo.
Last edited by Michael Ackland (2018-09-29 14:01:37)
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#7 2018-09-29 14:42:36
- colinleb
- DF Members
- Name: Colin Le Boutillier
- From: Luton, Bedfordshire
- Registered: 2008-03-03
- Posts: 195
Re: Delia sp
Thank you Michael. Good to have photos to compare (in addition to your key/drawings).
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