A novel fungus, Mycodomus formicartus associated with black ant, Dolichoderus thoracicus (Smith) on bamboo

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Wuttiwat Jitjak
Niwat Sanoamuang


A fungus on a bamboo plant in Dan Sai district, Loei province, Thailand was collected for identification. Its appearance consisted of a grey-to-black matter with pores on the surface attached on a bamboo branch, and a population of black ants, Dolichoderus thoracicus (Smith) was associated with this fungus. Inside its fruiting body, there was a cavity functioning as a nest. With very dense hyphal mass, perithecia with periphyses were produced below the surface of the fruiting body. Asci contained 8 partascospores. The phylogenetic trees using three DNA regions, 18s rDNA, 28s rDNA and internal transcribed spacer suggested that it was in Dothideomycetes, Capnodiaceae but did not fit in any reported genus. Therefore, a new genus Mycodomus and species, Mycodomus formicartus were proposed and described.


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