Thread subject: Diptera.info :: Coenosia ID -> C. agromyzina & C. rufipalpis
Posted by Carnifex on 09-05-2019 11:04
#1
Hi,
here are two of what I think are both
Coenosia from a garden in Vienna. The first one I would ID as
C. agromyzina. Is that ok?
Here is the second one. Can this one be IDed?
Sorry for posting two ID request in one thread. I can split it if recommended :)
Edited by Carnifex on 25-06-2019 22:42
Posted by Nikita Vikhrev on 09-05-2019 13:29
#2
I agree with agromyzina. 2nd male is C. testacea or related species
Posted by Carnifex on 09-05-2019 17:17
#3
|t
Nikita, may I ask how you got to
testacea-group with just these two mediocre photos? General slender appearance and yellow legs? Because some of the features mentioned in the key are just not visible here.
I followed the key and reached in fact
C. testacea:
incomplete posteroventrals on hind femur (correct?)
palpi yellow (barely visible, but seen well under microscope) and gena broader than 3rd ant. segment:
-->
C. testacea. Happy to receive confirmation or correction
.
Edited by Carnifex on 09-05-2019 23:09
Posted by Nikita Vikhrev on 10-05-2019 10:29
#4
Gregor's at al. wording "incomplete/complete row of posteroventrals on hind femur" is very bad. There are very few pv on f3, not a row.
Use this one:
Hind femur with one or more well developed posteroventral setae on apical half... rufipalpis Meigen
- Hind femur with distinct posteroventrals on basal half only... testacea (Robineau-Desvoidy)
Posted by Carnifex on 10-05-2019 22:46
#5
Ok, I tried the new approach: There are ventral bristles in the apical half of the hind femur, if I see that correctly. Does this make it
C. rufipalpis?
Posted by Nikita Vikhrev on 10-05-2019 22:58
#6
Lorin, I think that in early may rifipalpis is the main possibility, it is spring species indeed. I think you are right.
Posted by Carnifex on 10-05-2019 23:08
#7
Thanks again!