Thread subject: Diptera.info :: Tachinidae with tumorous looking face (5 pics)

Posted by Rupert Huber on 11-08-2022 20:13
#1
Hi all!

Without being sure, I would interpret this fly as a Tachina (correction or more exact ID very welcome, of course)... but what does it have in its face? Frown Doesn't look like being normal to me.

Approx. 13-16 mm

30.7.2022; Czechia; South Bohemia; Prachatice; coordinates 49.01272, 13.98735

Posted by Rupert Huber on 11-08-2022 20:13
#2
2nd pic

Posted by Rupert Huber on 11-08-2022 20:13
#3
3rd pic

Posted by Rupert Huber on 11-08-2022 20:14
#4
4th pic

Posted by Rupert Huber on 11-08-2022 20:14
#5
5th pic

Posted by tristram on 11-08-2022 21:58
#6
Ptilinum : https://en.wikipe...i/Ptilinum
Edited by tristram on 11-08-2022 21:58

Posted by Rupert Huber on 11-08-2022 23:16
#7
Thanks tristram!

So this should mean that the fly is either extremely fresh (to me at least, it doesn't look like that, since the wings are already damaged a bit), or much more likely, that the ptilinum failed to collapse after use, right?

Are there any known pathologic reasons for that, or does it sometimes simply happen accidentally.

Posted by tristram on 12-08-2022 08:49
#8
It is most likely fairly fresh out of the pupa.

Posted by Rupert Huber on 12-08-2022 16:56
#9
Ok, thanks. So it takes much longer to collapse than I imagined. Never seen this before.