Thread subject: Diptera.info :: robust fly -> Pollenia cf vera
Posted by treebeard on 30-04-2018 20:26
#1
Slovakia,Banska Bystrica, 22.04.2018, meadow with hedgerows
Thank you in advance
Matej
Edited by treebeard on 02-05-2018 06:50
Posted by treebeard on 30-04-2018 20:27
#2
this should be the same specimen
Posted by treebeard on 30-04-2018 20:28
#3
also this one is the same
Posted by John Carr on 30-04-2018 21:28
#4
Pollenia
Posted by johnes81 on 30-04-2018 22:13
#5
Pollenia, indeed.
how large is it? do you think 12mm or so? very important to know.
Posted by treebeard on 01-05-2018 05:40
#6
It was smaller than, for example, large Tachinidae, I think 10 - 12 mm. But it is quite difficult to guess.
Posted by johnes81 on 01-05-2018 16:19
#7
hello treebeard, yes, i agree, conjecture about size is difficult in the field. i just ask because i suspect a particular species. note the yellow wing base, 5 marginal scutellar setae, black basicosta, dark body, dark abdomen. If i am correct, then you have a rare photo of a
Pollenia. Two things bother me: the longitudinal tessellations on the abdomen (supposed to be indicative of semicinerea group) and no clear shot of the hind leg to confirm or eliminate semicinerea group. I see conflicting features to support semicinerea group. I suspect it to be in the amentaria group, which will be only one possibility needing confirmation.
since i only have vague keys and no specimens to work with, i will need a confirmation about my diagnosis. please wait until i recieve an email about this species. I will return here when i have an answer ...
Posted by treebeard on 01-05-2018 17:21
#8
Thank you for your effort. I will wait.
Matej
Posted by johnes81 on 01-05-2018 21:13
#9
I have an expert opinion which matches my opinion: this fly could be
Pollenia vera.
I place it in the amentaria group for the following reasons: yellow wing base, black basicosta, 5 marginal scutellar setae, narrow frons, guessing that the carina is conspicuous based upon experience, one ad on t2 and overall dark-to-black appearance. Of all of the amentaria group, it seems to be the best fit for
vera. However, we cannot be 100% certain without genitalia. I have been surprised by Pollenia many times, thus,
you must retain a cf with this diagnosis.
Pollenia cf vera
please add to gallery atleast muchazavalit2.jpg
please collect if you see it again and send it to me. Thank you very much.
Edited by johnes81 on 01-05-2018 21:16
Posted by treebeard on 02-05-2018 07:07
#10
Thank you very much!
Of course, I will add it
Best regards
Matej