Fungalpedia – Note 2999, Neomyrmecridium

 

Neomyrmecridium Crous. 

Citation when using this data: Jing Yang et al. 2023 – Fungalpedia. 

Index Fungorum, Faceoffungi, MycoBank, GenBank, Fig 1.

Classification: Myrmecridiaceae, Myrmecridiales, Incertae sedis, Sordariomycetes, Pezizomycotin, Ascomycota, Fungi.

Notes: Neomyrmecridium was established by Crous et al. (2018c) to accommodate three species Neomyrmecridium septatum, N. asiaticum and N. sorbicola based on morphological characters and phylogenetic analyses. Recently, two new species Neomyrmecridium asymmetricum and N. guizhouense are introduced in the genus (Hyde et al. 2020b; Serrano et al. 2020). Myrmecridium aquaticum was transferred to Neomyrmecridium and synonymized under N. aquaticum (Crous et al. 2021). Currently, with available sequence data, six species are accepted in Neomyrmecridium (Chethana et al. 2021; Index Fungorum 2022).

Neomyrmecridium is characterized by solitary, unbranched conidiophores, polyblastic, denticulate conidiogenous cells, and fusoid-ellipsoid, septate conidia with upper two-thirds encased in a mucoid sheath (Crous et al. 2018a, c; Hyde et al. 2020b). Species in the genera are reported from freshwater and terrestrial habitats in China, Ecuador, Thailand and Germany (Crous et al. 2018a, c; Hyde et al. 2020b; Serrano et al. 2020). In this study, we introduce a new freshwater species Neomyrmecridium naviculare based on the morphology and phylogeny.

Type species: Neomyrmecridium naviculare J. Yang, Jian K. Liu & K.D. Hyde.

Other accepted species: Species Fungorum – search Neomyrmecridium.

 

Figure 1 – Neomyrmecridium naviculare (HKAS 124639, holotype) a, b Conidiophores and conidia. c Conidiogenous cell and conidia. d–i Conidia, sheath marked with arrow. j Germinated conidium. k, l Culture, k from above, l from below. Scale bars: a, b = 30 μm, d, j = 20 μm, c = 15 μm, e–i = 10 μm.

 

References

Chethana KWT, Manawasinghe IS, Hurdeal VG, Bhunjun CS et al. 2021 – What are fungal species and how to delineate them? Fungal Divers 109:1–25.

Crous PW, Luangsa-Ard JJ, Wingfield MJ, Carnegie AJ et al. 2018c – Fungal Planet description sheets: 785–867. Persoonia 41:238–417.

Crous PW, Osieck ER, Jurjevi Ž, Boers J et al. 2021 – Fungal Planet description sheets: 1284–1382. Persoonia 47:178–374.

Crous PW, Schumacher RK, Wingfield MJ, Akulov A et al. 2018a – New and interesting fungi. 1. Fungal Syst Evol 1:169–215. 

Hyde KD, Dong Y, Phookamsak R, Jeewon R et al. 2020b – Fungal diversity notes 1151–1276: taxonomic and phylogenetic contributions on genera and species of fungal taxa. Fungal Divers 100:5–277.

Serrano L, Sosa D, Magdama F, Espinoza F et al. 2020 – Neomyrmecridium asymmetricum sp. nov. from Ecuador. Mycotaxon 135:151–165.

 

Entry by

Jing Yang, School of Life Science and Technology, Center for Informational Biology, University of Electronic Science and Technology of China, Chengdu 611731, People’s Republic of China, School of Science, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Guizhou Key Laboratory of Agricultural Biotechnology, Guizhou Academy of Agricultural Sciences, Guiyang 550006, People’s Republic of China.

 

Published online 26 August 2026

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