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Diptera.info :: Identification queries :: Diptera (adults)
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Another or same Stegana?
donpedro34
#1 Print Post
Posted on 28-09-2022 20:41
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Location: Austria
Posts: 37
Joined: 28.07.12

Hi forum,

Found this on the 15. Mai 2022 in Austria, Vienna. On a dead treetrunk.
Fagus sylvatica => beech.

inaturalist-open-data.s3.amazonaws.com/photos/197836615/large.jpg

Size 5-6 mm.

Earlier in April that year on the same treetrunk I found this:

inaturalist-open-data.s3.amazonaws.com/photos/190318745/large.jpg

This was identified by Jan Maca as Stegana hypoleuca.

Could the upper one be the same as the lower, the colouration is different.
(Thread here: https://diptera.i..._id=105640)

Thanks!
Regards
Per
 
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Jan Maca
#2 Print Post
Posted on 29-09-2022 09:12
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The upper picture is S. mehadiae. Both species may occur sympatrically and in greater numbers (Bohemia: around Hlubok√°), which was proved by examination of their genitalia. Still, I have never seen both on the same trunk. They are stenotopic, prefer natural decidual forests. Both were collected from Austria only very long ago, the new findings reward publication. It would be of help if you would collect at east S. hypoleuca in order to prove some morphologic details. This needs good luck, I cross my fingers.
 
donpedro34
#3 Print Post
Posted on 02-10-2022 07:31
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Location: Austria
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Joined: 28.07.12

Thanks Jan, I will try.
 
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