Diptera.info

Posted by JariF on 28-04-2009 15:12

Hi, this reddish brown Heleomyzidae was flying around Anemone nemorosa flowers. April 26.2009 Helsinki, Finland.

Jari

Edited by JariF on 28-04-2009 17:59

Posted by Andrzej on 28-04-2009 16:31

Hmm, it Suillia parva/flavifrons species-group !
If scutellum is bare ventrally should be S. flavivrons, if hairy so S. parva :)

Posted by JariF on 28-04-2009 17:59

Hooray ! Thank You Andrzej, we have a name :D The scutellum is ventrally hairy, so it's parva. Thank You once more.

Jari

Posted by phil withers on 28-04-2009 18:16

Not necessarily: it could be dawnae, which is not easy to separate in females.

Posted by JariF on 28-04-2009 19:09

Hmmm, that would be interesting. As far as I know Suillia dawnae is found only from British Islands ;) Everything is possible nowdays but I would be a bit sceptic with that. The second thing is, that this information is based only what I can find from Fauna Europaea database.

Jari

Posted by Andrzej on 28-04-2009 19:51

Hi !,
and ... what about the characters used in the British key by Phil ?
Andrzej :|

Posted by phil withers on 28-04-2009 21:09

I find dawnae much more frequently here in France than parva; just because I first found it in Britain does not mean it cannot occur elsewhere. The character to separate the two (which may not always work - limited material to try it on !) is whether the pruinosity on the frons reaches past the orbital bristles (parva) or not. The position of the orbitals may also work: in dawnae these are well forward of the anterior ocellus. Good luck !

Posted by Andrzej on 28-04-2009 22:16

Thanks Phil for your comments !
Right, S. dumicola described from UK was found in Poland some years ago !
What about the distribution of S. dawnae in France. Is S. dawnae more limited to highlands or lowlands areas ?.

Posted by JariF on 29-04-2009 05:42

Hi, I don't really know abouth the pruinosity but the bristles are visible in this bad picture.

Jari

Posted by phil withers on 29-04-2009 17:42

#10

I'd say parva on the strength of this pic. I have a feeling (nothing more than that yet without checking my collection) that dawnae is more lowland and parva more "alpine"...but don't quote me ! Incidentally, since I named it after my ex-wife, I'd be happy to sink it as a synonym one day !

Posted by Andrzej on 29-04-2009 18:53

#11

I agree fully with your opinion that S. parva is more
" an alpine" species :)
There is a small pseudovibrissa seen at the last picture !.
I've noted it in more specimens !

Edited by Andrzej on 29-04-2009 18:54