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Diptera.info :: Identification queries :: Diptera (adults)
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Geomyza
AliWi
#1 Print Post
Posted on 18-06-2021 10:55
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Hi again,

is it possible to identy this Geomyza and distinguish between hackmani and balachowskyi?
Found on 13.05.2021 near Hannover, lower Saxony, germany.

Thanks a lot.

Best regards
Alex
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AliWi
#2 Print Post
Posted on 18-06-2021 10:55
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2nd image
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Jan Willem
#3 Print Post
Posted on 18-06-2021 19:50
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Females of Geomyza hackmani normally have a largely black abdomen, not this banded patern, but I have seen exceptions to this rule. Also Geomyza hackmani normally has a much darker subscutellum. So this all seems to point in the directlon of Geomyza balachowskyi. To be entirely sure you would have to study sternite 8 which is retracted.

Considering what is visible this is almost certainly a female of Geomyza balachowskyi.
Jan Willem van Zuijlen
 
AliWi
#4 Print Post
Posted on 22-06-2021 09:01
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Thank you very much, Jan Willem for the explanation and description of ID criteria.
I hope to keep them in mind ;-)

Best wishes
Alex
 
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