Posted by christoophe on 07-08-2011 16:31
#1
Hello
On the French forum, we doubt the criteria for identifying Terellia and Orellia.
Thank you in advance for the criteria.
First
passionnedessixpattes : France : laboissiere : 60570 : 14/07/2011
Altitude : NR - Taille : 4mm env
Réf. : 74248
Second
Daniel Pollen : Suisse : Bex : 1880 : 26/06/2006
Altitude : 300 m - Taille : 10-15 mm
Réf. : 28412
Edited by christoophe on 07-08-2011 16:35
Posted by Nosferatumyia on 07-08-2011 23:37
#2
In general, my division (Korneyev 1985) based on genital characters has been accepted in the HBook for ID British Insects (White 1988), Insecta Helvetica (Merz 1994) and Nederlandse boorvliegen (Smit 2010), the most comprehensive European keys to fruit fly species.
Orellia possesses 2 shining black spots on the transverse suture of the mesonotum and long lobe of the cubital cell,
Chaetostomella and
Chaetorellia have unpaired black spot on the tip of the scutellum (as on your last picture)
Terellia (incl.
Cerajocera) has none of those characters (and apparently is a paraphyletic aggregation).
So, the first species is
Terellia (Cerajocera) tussilaginis and the second is
Chaetostomella cylindrica.
It's easy...
Edited by Nosferatumyia on 07-08-2011 23:42
