Diptera.info

Posted by Rupert Huber on 01-07-2026 17:04

Hi everyone!

Key in "the book" leads me to Hybomitra muehlfeldi: First antennal segment with long hairs dorsally, not very slender palps -> angle between the eyes about 100° -> eye facets gradually get bigger upwards -> no golden hairs on first tergite.

16 mm long

28. June 2026, Austria, State of Salzburg, St. Johann im Pongau district, Felseralm near Obertauern, about 1620 m a.s.l., sitting on a wooden cow shed. Coordinates 47.24866, 13.51504

Edited by Rupert Huber on 04-07-2026 19:04

Posted by Zeegers on 02-07-2026 08:46

I am not sure about the palp.
Notopleural lobe is / seems totally dark.
And antenna is very red.\

So my gut feeling is male arpadi. (?)

Theo

Posted by Rupert Huber on 03-07-2026 07:33

Notopleural lobe is dark, indeed.

The hairs on first antennal segment are not too long for arpadi? At the one a few days ago they were so short, that I couldn't even find any (10x magnification under microscope).

Also I tried to make a better picture of the palp. Not so easy with my equipment, but maybe it shows a bit more. I still think it's not 2x as long as broad, though I'm not 100% sure...

Edited by Rupert Huber on 03-07-2026 07:50

Posted by Zeegers on 04-07-2026 09:10

#11

Thanks.

A bit late in the year, but male H. lundbecki (hairs on first antennal segment short, antenna very orange, not. lobe dark, palpus relatively long and hairs on tergites 2-3 not 'bushy')

Theo

Posted by Rupert Huber on 04-07-2026 19:04

#12

Ok, thanks!

Maybe it's because up there winter ends at least one month later than in "lower" areas like my Chiemgau Alps.