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28-04-2026 21:53

William Slosse William Slosse

Good evening everyone, Recently, in a wet forest,

28-04-2026 21:50

Pablo Sandoval Pablo Sandoval

Hola a todos,Espero se encuentren bien. Hace mucho

27-04-2026 18:05

Lothar Krieglsteiner Lothar Krieglsteiner

... still attached at standing tree. The green con

28-04-2026 20:33

Vitus Schäfftlein

Hello, I found Trochila ilicina on Ilex aquifoliu

28-04-2026 20:07

Lothar Krieglsteiner Lothar Krieglsteiner

... on twig in the air at standing Ceratonia siliq

27-04-2026 20:52

Lothar Krieglsteiner Lothar Krieglsteiner

Found on hanging tiwg of Olea europaea in dried-ou

27-04-2026 18:48

Tony Moverley

Collected 23rd April 2026, Norfolk, EnglandSwarms

27-04-2026 17:41

Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, same leaf than the last post. The con

27-04-2026 17:16

Lothar Krieglsteiner Lothar Krieglsteiner

.. Algarve, moist lying.The conidiomata look like

27-04-2026 12:54

Steve Clements

Bonjour. Ce petit champignon blanc résupiné et

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galls (?) or slips of insects? - on Hypoxylon rubiginosum (s.l.)
Lothar Krieglsteiner, 30-10-2015 11:31
Lothar Krieglsteiner

I add here picture of two sites in Southern Gemany. I already had this in different forums but nobody could help me. As here are specialists of Hypoxylon and related fungi, perhaps somebody knows "who" is responsible for this roundish bouildings which I have already found quite often.


Regards from Lothar

  • message #38639
  • message #38639
  • message #38639
Vizzini Alfredo, 30-10-2015 11:50
Re : galls (?) or slips of insects? - on Hypoxylon rubiginosum (s.l.)
Hi,

they are galls induced by the insect (Diptera, Cecidomiide)Mycocecis ovalis. Quite rare

Best

Alfredo V.
Lothar Krieglsteiner, 30-10-2015 11:58
Lothar Krieglsteiner
galls of gall midge Mycocecis ovalis - always (?) on Hypoxylon rubiginosum (s.l.)

Hi Alfredo,


great :-) - I am happy to have this identification.


But I have to contradict - this galls are all but rare, I have seen this many times. Peter Püwert wrote me a mail few minutes ago and stated that they are well-known to him, too.


Best regards from Lothar


 

Hans-Otto Baral, 30-10-2015 12:19
Hans-Otto Baral
Re : galls (?) or slips of insects? - on Hypoxylon rubiginosum (s.l.)
Yes, I knew them also but had no idea ...

Here it was already an issue in 2009
http://www.ascofrance.com/forum/7339/simple-question
Thomas Læssøe, 30-10-2015 17:04
Re : galls (?) or slips of insects? - on Hypoxylon rubiginosum (s.l.)
Yes also quite common in Denmark and Sweden. I knew the guy that described the thing in England so I saw the light already 25 years ago :-)
Björn Nordén wrote it up from Sweden sometime back. As far as I remember I have only seen it on rubiginosum s.st.