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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.

:)