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Latest Photo Additions
Laboulbeniales on Diptera
by Jan Máca

Enclosed photographs show Scaptomyza graminum infested by Stigmatomyces sp. on abdominal tergites, and enlarged Stigmatomyces from ther same host. The parasite is ascomycete fungus of the order Laboulbeniales, familiarly named "laboulb". Six species of laboulbs (genera Arthrorhynchus and Stigmatomyces) from Diptera were published from Czech Republic by Rossi and Máca (2006) (DOWNLOAD), three more species (from Scaptomyza graminum [Drosophilidae] - see pictures, from Spelobia [Sphaeroceridae] and from Parydra[Ephydridae]) were found there recently. From most European countries there is no information about laboulbs, so that their geographic distribution there is not very clear. Tropical countries are rich on laboulbs but it is presumed that most species are still undiscovered. Only the "higher" diptera (Cyclorrhapha) are infested.

The biology of laboulbs is very interesting - see e. g. Majewski (1994) or Santamaria (1998), both quoted in the above mentioned paper. Preserved (dried or alcoholized) specimens of flies with laboulbs would be greatly acknowledged by W. Rossi (email) and/or Jan Máca (email).


The photograps, made by Dr. F. Weyda, are SEM ones, thus not "true-color" ones. The laboulbs are usually brown.


References:
Majewski, T., 1994. Tha Laboulbeniales from Poland. - Polish Botanical Studies 7: 3-466.
Rossi, W. & J. Máca, 2006. Notes on the Laboulbeniales (Ascomycetes) from the Czech Republic. - Sydowia 58(1): 110-124.
Santamaria, S., 1998. Laboulbeniales, I. Laboubenia. - Flora Mycologica iberica 4: 1-186.
Comments
#1 | Nikita Vikhrev on 25 August 2007 15:15:33
I'll try to collect all flies with fungi from now!
Nikita
#2 | Kahis on 26 August 2007 00:10:29
I found a Pelina (Ephydridae) with many 'laboulbs' a few days ago. Collected and pinned Smile
#3 | Jan Willem on 10 September 2007 12:40:43
During the last few weeks I collected many drosophilids by means of a wine trap (canopy trap). Several of these drosophilids have laboulbs. I will contact Jan M?ca.
Jan Willem
#4 | Nikita Vikhrev on 18 December 2007 09:48:13
Yesterday I collected Discomyza maculipennis (http://www.diptera.info/forum/viewthread.php?forum_id=5&thread_id=10224) with nice Laboulbeniales Grin
#5 | Jan Willem on 02 March 2009 14:00:38
It took me long enough Smile but I finally sent a number of drosophilids (Drosophila subobscura) to Dr. Rossi (Stygmatomyces majewskii ??).
#6 | John Bratton on 05 February 2017 17:30:37
Occasionally I find growths on water beetles that appear to be fungi, such as
http://www.ispotnature.org/node/706171
http://www.ispotnature.org/node/855715
http://www.ispotnature.org/node/266016

Are you able to say whether these are Laboulbeniales, please?

John Bratton
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16 July 2018 06:31
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