Thread subject: Diptera.info :: green-metallic fly with striped eyes -> Calliopum simillimum
Posted by Carnifex on 30-05-2018 10:54
#1
Hi,
I wonder to which family this specimen belongs.
Found in Vienna, End of May
Size: about 4mm
Kind regards,
Lorin
Edited by Carnifex on 03-06-2018 22:24
Posted by johnes81 on 30-05-2018 11:23
#2
Calliopum. I can investigate a species later, unless someone else can post.
I have alot to do today.
Posted by johnes81 on 30-05-2018 18:35
#3
very difficult to tell from this photo. I guess
C. aeneum is closest.
do you think that you can make microscopic photos of the ovipositor? lateral is good enough, i think. Even the ac count of the thorax is helpful if you can examine it.
Posted by Carnifex on 30-05-2018 23:07
#4
Hi,
I uploaded an additional pic. Does it help?
Edited by Carnifex on 30-05-2018 23:09
Posted by johnes81 on 31-05-2018 09:52
#5
Hello, the new photo is not so helpful. I know Calliopum are very small and dark, which makes it difficult to count the rows of ac. I think that i see six rows of ac hairs. In this case, you are facing
C. simillimum or
C. aeneum. I do not see a match with
C. simillimum but it is difficult to be accurate with these photos. I have attached a lateral view of the ovipositor of
C. simillimum. I do not think that this species is
C. simillimum. A quick test can help: are the rays of the arista shorter than the width of the base? if they are short, then you have
C. aeneum as long as you can also count six rows of ac hairs.
I will say
Calliopum cf aeneum. If you can prove it, then you can remove the cf
if you have a microscope, then this is very simple process. you do not need to dissect the ovipositor. Simply view the ovipositor in perfect lateral position and check the rays of the arista.
:)
Posted by johnes81 on 31-05-2018 09:54
#6
also attached a view of the long rays of
C. simillimum
notice that the rays are much longer than the width of the base of the arista.
Posted by Carnifex on 01-06-2018 15:58
#7
I hope the resolution does allow a species ID now.
Posted by Carnifex on 01-06-2018 15:58
#8
ovipositor
Posted by Carnifex on 01-06-2018 15:59
#9
antenna
Posted by johnes81 on 01-06-2018 16:15
#10
Calliopum simillimum. I am sorry that i was unable to see this structure until now.
You did very well to make photos of this. Job well done, Lorin :)
Posted by Carnifex on 03-06-2018 22:16
#11
And I thank you for your ID and instructions.
The fly was also lucky, as it could be released after the final successful photo session :)
Posted by johnes81 on 04-06-2018 16:00
#12
Calliopum are very lovely and very nice to work with. I am happy that it survived the id process. I am sorry that i couldn't help faster. The first photo has glare from light and the angle is not perfect lateral. I have made errors in judgement with such situations, thus it is better to be persistent.