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Anthomyiidae_Hydrophoria sp.(male) is correct? Region Malá Fatra Terchová about 600 m above sea level. Thank you very much for your help. I made a photo of 20.05.2011.

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[quote]Mucha Fero wrote:

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[quote]Mucha Fero wrote:

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Hydrophoria diabata/lancifer. (The epandrium seems long and narrow, but I think you would need a specimen to be sure. Opinions?)

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Stephen thank you very much.

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Here is an extract from my key. I will try to post a some figures later

1 Epandrium in profile longer than high, the sides distinctly shining. Surstylus in caudal view narrower in apical half diabata Pand.
– Epandrium shorter, the sides only very slightly shining. Surstylus in caudal view wider in apical half
lancifer Harris

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I don't know if these PDF's will work?

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Obviously not!!

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Thank you for trying! I don't think Fero has the specimen, so I was speculating idly. I have your Plate 32, and it occurred to me that this one might have had a chance of turning out to be H. diabata given better evidence. At least the st5 processes look quite beefy! But without the specimen...

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Stephen
What can I do that I possessed specimens. I do not understand the above discussions.
Thank you very much.

Mucha Fero

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A specimen is the dead body of the fly, which can be examined with a microscope. You need to catch the fly, preserve it in alcohol and send it to an expert.

With only a photograph it is often impossible to know the exact species.

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Hi Stephen
Thank you for the information. I think that to not be too professional. For me it is important stay in the beautiful countryside.

Sincerely, Fero Mucha.

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Many of us make the same choice :)

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Hi Stephen
Indeed, this is so and that's good.
Mucha Fero

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According to the key from Ackland !

HYDROPHORIA
Males
1 Mid femur and hind femur completely yellow................................................................................. linogrisea Mg.
– Mid femur and hind femur mainly dark................................................................................................................. 2
2 Prealar seta at least as long as posterior notopleural seta. Abdomen without dark foremarginal bands. sternite V
with setae on inner margin of processes clustered in apical half or medially........................................................ 3
– Prealar seta shorter than posterior notopleural seta. Abdomen with dark foremarginal bands. sternite V with
setae on inner margin clustered near base............................................................................................................. 4
3 Epandrium in profile longer than high, the sides distinctly shining. Surstylus in caudal view narrower in apical
half................................................................................................................................................... diabata Pand.
– Epandrium shorter, the sides only very slightly shining. Surstylus in caudal view wider in apical half
........................................................................................................................................................ lancifer Harris
4 Abdomen generally with translucent yellowish areas at base. Tibiae more or less yellow, at least in basal half
.............................................................................................................................................................. ruralis Mg.
– Abdomen darker in ground colour. Tibiae dark ................................................................................. silvicola R.D

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Hi javanerkelens
Thank you very much for important information for understanding Hydrophoria.

Mucha Fero