04-11-2025 09:07
Josep Torres
Hello.A suspected Hymenoscyphus sprouting on a thi
04-11-2025 12:43
Edvin Johannesen
Hi! One more found on old Populus tremula log in O
03-11-2025 21:34
Edvin Johannesen
These tiny (0.4-0.5 mm diam.), whitish, short-stip
28-10-2025 15:37
Carl FarmerI'd be grateful for any suggestions for this strik
03-11-2025 16:30
Hans-Otto Baral
Hello I want to ask you if you have found this ye
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
they are galls induced by the insect (Diptera, Cecidomiide)Mycocecis ovalis. Quite rare
Best
Alfredo V.
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
Here it was already an issue in 2009
http://www.ascofrance.com/forum/7339/simple-question
Björn Nordén wrote it up from Sweden sometime back. As far as I remember I have only seen it on rubiginosum s.st.