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male - 6mm - Berlin - late May 2018

I think that this specimen fits well with Hydrotaea dentipes but this is my first Hydrotaea sp.
I believe that the 6mm size eliminates H. similis and its av on hind tibia.
I see hairs on mid coxae, so i cannot eliminate Hydrotaea palaestrica with no experience.
However, Hydrotaea dentipes seems to be the best option. no drawings of genitalia for comparison.
a photo of the cerci/surstyli in dorsal view will be added last.

Thank you for your time,
John

edit: i completely ignored the hairy eyes. i wear the dunce cap today :)

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lateral view

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eyes have small hairs

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head and frons

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arista

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palpi

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haltere

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modified foreleg (even the tibia seems modified)

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hind femur and tibia

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mid coxae are rather hairy

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mid leg

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wing fits the group

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cerci and surstyli dorsal view

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John, you overlook that eyes are densely hairy!

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Hello Nikita, i agree: i TOTALLY overlooked it. Now that you mention it, i see how dense it really is. I have no idea what i am thinking. I wonder if i am used to Helina where small hairs are also bare. I am not making excuses for my stupidity here but i have migraines that bother me when the weather changes. I have a major headache today and i suppose it just didn't register.

I will key it again, Sir. I apologize for the error. :)

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Hello Nikita, Hydrotaea cyrtoneurina is much better than dentipes. I think that i will call it a day and rest.

I truly appreciate you Nikita. I hope that i can help you in return someday. Just ask.

Have a splendid day, :)
John

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Take it easy, John!
(3 years ago I collected in Altai Mts series of Hydrotaea "sp. n." When I come back Moscow, I found that it is H. militaris with overlooked cloud on the wing :)

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I saw that cloud in the keys and i told my wife that i would probably overlook it. I think that dipterology can be extremely difficult at times and it is alot of data to process, thus we can easily overlook the most obvious details. I always tell people to respect the experts because they have a difficult job. Muscidae is such a large and diverse family. I struggle sometimes with Muscidae. People say Pollenia are difficult but i'd rather play with Pollenia than Muscidae on most days :)

I am sometimes a perfectionist. I try too hard, then i get mad at myself when i make mistakes. I suppose i get this intensity level from playing sports in my youth. I used to lift weights and all of that macho man stuff. I got over it after my teens. I think that sometimes i still get temperamental. I mean no harm.

Anyway, I hope that you have a Great Day, Nikita. Thank you for helping :)

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Hello

To be sure

Need to show that pre ac are present

also a better view of tibia 3

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Hello Dr Elisabeth A. Harris, we have enough photos. The specimen is H. cyrtoneurina. "to be sure" of any species, we use genitalia or dna and i have included genitalia. I forgot that i have Hennig and i missed the hairy eyes, hence, the need to post.

sometimes i sense that you are trying to learn from other peoples photos. If this is the case, then you should just ask to see photos. The way you word things seems like you disrespect peoples opinion. I have no problem showing additional photos if you just want to learn from them. just ask :)

I hope that you have a splendid day. Remember, just ask. All is good.

also, the sockets are visible where pre acr are missing and the hind tibia matches the drawings of Gregor et al.