Neodidymelliopsis camporesii

Neodidymelliopsis camporesii D. Pem & K.D. Hyde, in Hyde et al., Fungal Diversity 100: 41 (2020)

Index Fungorum number: 556798; Facesofungi number: FoF 06468

Etymology: Name refects the collector of the specimens, Mr Erio Camporesi.

Holotype: MFLU 18-0929

Saprobic or pathogenic on dead aerial stem of Galium sp. Sexual morph: Undetermined. Asexual morph: Conidiomata 93–117 × 68–227 μm (x̄ = 100 × 150.8 µm, n = 20) pycnidial, globose to subglobose, ellipsoidal, or irregular, superfcial to immersed solitary or confuent, ostiolate with an elongated neck. Pycnidial walls 11–15 μm, pseudoparenchymatous, comprising 1–2-layer of cells of textura angularis. Conidiophores indistinct. Conidiogenous cells 1–3 × 1.2–3.1 μm (x̄ = 2.4 × 2.1 µm, n = 20), annelidic, hyaline, smooth, fask-shaped, ampulliform to short cylindrical. Conidia 8–12 × 2–4 μm (x̄ = 10.8 × 3.5 µm, n = 20), smoothand thin-walled, oblong, with rounded ends, sometime base obtuse, hyaline 1-septate, slightly constricted at the septum, slightly guttulate.

Material examined: ITALY, Province of Forlì-Cesena [FC], Borgo Paglia- Cesena, on dead aerial stem of Galium sp. (Rubiaceae), 26 March 2018, E. Camporesi, IT3786 (MFLU 18-0929, holotype), ex-type living culture, MFLUCC 18-1136.             

GenBank Numbers: ITS: MN244199; LSU: MN244169; SSU: MN244175; TUB2: MN879321

Note: Isolate MFLU 18-0929 obtained from dead aerial stem of Galium sp. was identified as a new species of Neodidymelliopsis, with support from both morphology and phylogeny. Neodidymelliopsis camporesii differs from the closely related species, N. longicolla, in having larger conidiomata (200–490 × 150–360 μm versus 93–117 × 68–227 μm), narrower conidiophores (1–3 × 1.2–3.1 μm versus 4.5–6.5 × 4.5–6 μm) and shorter, hyaline ascospores (8–12 × 2–4 μm versus 12–15 × 4–7 μm) compared to pale brown ascospores of N. longicolla.