[Syrphidae] Re: Sphegina-Paper

[Stefan Pruner]

Dear Jeroen!

I'm pleased you ask for more information, and pictures. I can only provide
you some rather bad ones, photographed through the microscope. I
concentrate on the characteristics mentioned in van Veen (that I use
mostly). Sternit 3 here is not wider than long as I see it, which would
point to S. cornifera, but the surstylus looks more like the one pictered
in van Veen for S. latifrons. But I can not see the characters van Veen
mentioned further: A bare line on the frons, and a partly undusted tergit
1.... So, my photos you find attached show the surstylus, and sternit 3. I
have not yet removed the genitals.

Do you have both papers - Kassebeer, and Vujić - and could you send them
for me?

Best wishes!

Stefan

Am So., 12. Jan. 2020 um 15:32 Uhr schrieb Jeroen van Steenis <
j.van.steenis at xmsnet.nl>:

> Dear Stefan
>
> For varifacies you need the original publication of Kassebeer.
>
> In Sphegina the mouthedge can be variably in colour, so a yellow mouthedge
> does not rule out varifacies, but a predominantly black does rule out
> latifrons.
> You should also check sublatifrons which is described in Vujic paper.
>
> I am working on the worldwide species of the genus Sphegina taxonomically
> and on the European species for the IUCN red list, so I am very interested
> in this record.
> Could you give me more details about it and possibly send some pictures so
> I can check the identity.
>
> Best wishes,
>
> Jeroen
>
> Op zo 12 jan. 2020 om 11:32 schreef Francis Gilbert <
> Francis.Gilbert at nottingham.ac.uk>:
>
>> here it is
>>
>> F
>>
>>
>>
>> *From:* syrphidae-bounces at lists.nottingham.ac.uk [mailto:
>> syrphidae-bounces at lists.nottingham.ac.uk] *On Behalf Of *Stefan Pruner
>> *Sent:* 12 January 2020 10:26
>> *To:* hoverfly discussion list <syrphidae at lists.nottingham.ac.uk>
>> *Subject:* [Syrphidae] Sphegina-Paper
>>
>>
>>
>> Dear fellow syrphidologists!
>>
>>
>>
>> I have problems with characters of one of my Sphegina specimens. I can
>> not really see if I have a S. latifrons or a S. varifacies under the
>> microscope.
>>
>> Does anyone have this paper, and does it have the genitals pictured for
>> both mentioned species?
>>
>> Vujić, A. (1990) Genera Neoascia Williston 1886 and Sphegina Meigen 1822
>> (Diptera: Syrphidae) in Yugoslavia and description of species Sphegina
>> sublatifrons sp.nova. Bull Nat Hist Mus., Belgrade, B45: 78-93.
>>
>>
>>
>> Best wishes!
>>
>>
>>
>> Stefan
>>
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