Fungalpedia – Note 2494, Lepidopterella
Lepidopterella Shearer & J.L. Crane
Citation when using this data: Dong W et al. 2020 – Fungalpedia, Ascomycota.
Index Fungorum, Facesoffungi, MycoBank, GenBank, Fig. 1
Classification: Argynnaceae, Incertae sedis, Incertae sedis, Dothideomycetes, Pezizomycotina, Ascomycota, Fungi
Saprobic on submerged twigs. Sexual morph: Ascomata slightly immersed to superficial, solitary, globose to subglobose, dark brown to black, lacking ostioles. Peridium pseudoparenchymatic, composed of several layers of brown to black cells. Pseudoparaphyses numerous or sparse, cellular, hyaline, septate, branched. Asci 8-spored, bitunicate, subglobose to globose, pedicellate, lacking an ocular chamber, thick-walled. Ascospores overlapping, irregularly arranged, papilionaceous, brown to orange-brown, 1-septate, constricted and darker at the septum, smooth-walled (Shearer and Crane 1980). Asexual morph: Undetermined.
Notes: Lepidopterella, typified by L. palustris, was placed in Argynnaceae together with the type genus Argynna Morgan based on the papilionaceous ascospores (Shearer and Crane 1980). Lepidopterella probably does not belong to Argynnaceae because of the different ascomata. Lepidopterella possesses globose to subglobose ascomata and brown to orange-brown ascospores, while Argynna has discal apothecia and pale brown ascospores with a dark band at the septum (Shearer and Crane 1980; Raja and Shearer 2008; Hyde et al. 2013). Phylogenetic analyses showed L. palustris did not form strong relationships with any families and orders in Dothideomycetes (Shearer et al. 2009; Peter et al. 2016). Lepidopterella is retained in Argynnaceae (Hyde et al. 2013), which is accepted by Wijayawardene et al. (2018, 2020). Two species are accepted in Lepidopterella and both of them are from freshwater habitats. They can be distinguished by ascospore morphology and size.
Type species: Lepidopterella palustris Shearer & J.L. Crane.
Other accepted species: Species Fungorum – search Lepidopterella.
Figure 1 – Lepidopterella palustris (Material examined: USA, Illinois, Johnson County, Elvira Cypress Swamp, on submerged twig, 3 August 1977, J.L. Crane & J.D. Schoknecht, ILLS 42219, isotype). a Herbarium label. b Section of ascoma. c Pseudoparaphyses. d, e Asci. f, g Ascospores. Scale bars: b = 200 µm, c = 4 µm, d, e = 30 µm, f, g = 15 µm.
References
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Entry by
Wei Dong, Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China, Department of Entomology and Plant Pathology, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Innovative Agriculture Research Center, Faculty of Agriculture, Chiang Mai University, Chiang Mai 50200, Thailand, Center of Excellence in Fungal Research, Mae Fah Luang University, Chiang Rai 57100, Thailand, Institute of Plant Health, Zhongkai University of Agriculture and Engineering, Haizhu District, Guangzhou 510225, China
Published online 22 May 2026
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