Fungalpedia – Note 2198, Doitungomyces
Doitungomyces N. Afshari, Lumyong & K.D. Hyde
Citation when using this data: Afshari N et al. 2025 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig 1
Classification: Cryphonectriaceae, Diaporthales, Diaporthomycetidae, Sordariomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on dead branches of Dipterocarpus alatus. Sexual morph: Stromata solitary, scattered, well-developed, comprising elliptical and black spots, slightly raised through epidermis on host surface. Ascomata perithecial, immersed, erumpent, pyramid shape to subglobose, coriaceous to carbonaceous. Peridium outer layer composed of brown, compact, thick-walled textura angularis cells, inner layer composed of hyaline, loosely arranged cells of textura angularis. Hamathecium comprises hyaline, unbranched, septate, constricted at septum, tapering towards the apex, paraphyses longer than asci. Asci 8-spored, unitunicate, clavate to cylindric-clavate, with small pedicel, apex oblong, J- apical ring. Ascospores uniseriate, ellipsoid to fusiform, slightly narrow toward ends, straight to mostly curved hyaline, medianly 1-septate, constricted at septa, with 2–4 guttules. Asexual morph: Undetermined.
Notes – Doitungomyces is introduced for a fungus occurring on dead branches of Dipterocarpus alatus. Doitungomyces, is typified by Doitungomyces dipterocarpi and formed a separate lineage and is distinct from other genera in Cryphonectriaceae based on the combined ITS, LSU, tef1-α and rpb2 sequence data with 69% ML support value. In a BLASTn search of GenBank, the closest match of the ITS sequence of or isolate is Endothia cerciana (CSF 15423) with 89.04% similarity. Aurantiosacculus castaneae is the only taxon in the family that does not produce orange stromatic tissues based on published data. The morphological comparison showed that our species has unique characteristics among related taxa in this family in lacking elongated perithecia beaks, but is similar in having asci with a refractive apical annulus (Voglmayr et al. 2012, Senanayake et al. 2018, Jaklitsch & Voglmayr 2019, Fan et al. 2020, Huang et al. 2022, Wang & Chen 2023). Here, we introduce Doitungomyces as a new genus within the Cryphonectriaceae based on morphology and phylogenetic evidence. Additional collections, together with detailed molecular characterization are required to further validate the phylogenetic placement of the genus.
Type species: Doitungomyces dipterocarpi N. Afshari, Lumyong & K.D. Hyde.
Other accepted species: Species Fungorum – search Doitungomyces
Figure 1 – Doitungomyces dipterocarpi (MFLU 24-0465, holotype). a Appearance of ascomata on Dipterocarpus alatus woody litter. b Longitudinal section of ascomata. c Vertical section of ascoma. d Section of peridium. e Paraphyses. f–k Asci. l–o Ascospores. p A germinated ascospore. q Colonies on PDA (front and reverse). Scale bars: a, b = 500 μm, c = 50 μm, d, e = 20 μm, f–k, p = 10 μm, l–o = 5 μm.
References
Jaklitsch WM, Voglmayr H. 2019 – European species of Dendrostoma (Diaporthales). MycoKeys 59, 1–26.
Entry by
Naghmeh Afshari, Department of Biology, Faculty of Sciences, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Center of Excellence in Microbial Diversity and Sustainable Utilization, Chiang Mai University, Chiang Mai 50200, Thailand
Published online 24 March 2026