Diptera.info

Posted by cyprinoid on 16-08-2009 17:06

Norway, 31.07.09, Just shy of 10mm

Edited by cyprinoid on 18-08-2009 10:47

Posted by javanerkelens on 16-08-2009 17:34

Katepisternal seems very hairy and arista not long plumose (but difficult to say with blackish background...)
I also think P.subventa

Joke

Posted by Stephane Lebrun on 17-08-2009 18:02

Normally, 3 p. setae on mid tibia and 2 presut. acr would indicate Phaonia bitincta, but in somes rare cases, Phaonia subventa can have 3 p. a leg, and 2 on another, like other Muscidae. We can't neither evaluate the hairiness of arista on this black background, nor the width of the presutural black vittae from this anglethough they appear narrow, it's a pity. The doubt remains...

Posted by cyprinoid on 17-08-2009 18:50

almost identical to pic 1, but slightly different angle (and bigger)

Edited by cyprinoid on 17-08-2009 18:52

Posted by Stephane Lebrun on 17-08-2009 19:10

Thanks, but I'm still in doubt.
Arista seems not too long plumose -> P. subventa.
Presutural vittae seems narrow, yellow pedicel -> P. bitincta.

Posted by cyprinoid on 17-08-2009 19:22

Can I be stupid and as what is meant by a. Presutural vittae and b. yellow pedicel?

I have no idea how it would help, but here is a P. subventa identified by you (I think) earlier: http://www.flickr...2/sizes/o/

Edited by cyprinoid on 17-08-2009 19:22

Posted by javanerkelens on 17-08-2009 19:30

Because of this thread, i looked through all my P.subventa /rufiventris, and yes...there was a P.bitincta (meron haired below speracle and 3 post. tibia 2).
Not found yet in the Netherlands......so thanks !! :D:D

Joke

Posted by Stephane Lebrun on 17-08-2009 19:44

Pedicel is the scientific name for the 2nd antennal segment, and presutural vittae are the 2 median dark stripes before the thoracic suture. Theses stripes are normally at least as broad as 2/3 of the grey area separating them for P. subventa, and not more than 1/3 for P. bitincta(must be appreciated from a rear view).
I cannot give a definitive and reliable ID from these pictures, sorry. The P. subventa given in link is more "conventional".

Posted by Stephane Lebrun on 17-08-2009 19:48

#10

Joke said :

Because of this thread, i looked through all my P.subventa /rufiventris, and yes...there was a P.bitincta (meron haired below speracle and 3 post. tibia 2).
Not found yet in the Netherlands......so thanks !!

I'm happy of this, Joke ! :)

Edited by Stephane Lebrun on 17-08-2009 19:48

Posted by cyprinoid on 17-08-2009 20:04

#11

Thank you very much for taking the time Stephane, I will file this as "Phaonia bitincta or P. subventa".

I'm glad this thread was good for something Joke (not just me :)).