Camporesiomyces qizhifengensis Song Bai, Rong Wu & Jian Ma, 2025

Bai, Song, Wang, Fang, Wan, Su-Ran, Lv, Xiao-Kang, Chen, Li-Jun, Wu, Rong & Ma, Jian, 2025, Morphological and phylogenetic analyses reveal two new species of Camporesiomyces (Tubeufiaceae, Tubeufiales) from terrestrial habitats in China, MycoKeys 124, pp. 177-192 : 177-192

Camporesiomyces qizhifengensis Song Bai, Rong Wu & Jian Ma sp. nov.

Fig. 2 .

Etymology.

‘‘ qizhifengensis ” refers to the ‘‘Qizhifeng Forest Park” where the holotype was collected.

Holotype.

HKAS 128896 .

Description.

Saprobic on decaying wood in a terrestrial habitat. Sexual morph Not seen. Asexual morph hyphomycetous. Colonies on natural substratum superficial, effuse, scattered or aggregated, hairy, yellow. Mycelium partly superficial, partly immersed, composed of branched, septate, guttulate, smooth-walled, hyaline to brown hyphae. Conidiophores 65–122 × 4–6 μm (x ̄ = 88 × 5.2 μm, n = 25), macronematous, mononematous, erect, solitary, smooth or occasionally verruculose, cylindrical, dark brown, paler towards apex, slightly flexuous, unbranched, 4–11 - septate, sometimes slightly constricted at septa. Conidiogenous cells 10–18 × 2.8–6 μm (x ̄ = 14.5 × 3.7 μm, n = 25), polyblastic, integrated, terminal, determinate, cylindrical, slightly tapering, conspicuously denticulate at conidial secession, subhyaline to pale brown. Conidia 11–16.2 × 3.9–5.2 μm (x ̄ = 13.3 × 4.6 μm, n = 30), acrogenous, solitary, cylindrical, obclavate or fusiform, 0–4 - septate, guttulate, subhyaline to yellowish-brown, slightly constricted at septa.

Culture characteristics.

Conidia germinating on PDA within 18 hours, producing germ tubes from apices. Colony on PDA reaching 3 cm diam. after 39 days at room temperature (approximately 25 ° C), circular or irregular, umbonate, with undulate margin, brown to dark brown, reverse pale brown to brown.

Material examined.

China • Guizhou Province, Liupanshui City, Dashan Town, Qizhifeng Forest Park , on decaying wood in a terrestrial habitat, 27 November 2024, Xia Tang, LQ 05 ( HKAS 128896 , holotype; GZAAS 25–0669 , isotype), ex-type living culture GZCC 25–0638 ; • Ibid., LQ 09 ( GZAAS 25–0666 , paratype), living culture GZCC 25–0639 .

Notes.

Camporesiomyces qizhifengensis ( HKAS 128896 ) exhibits morphological similarities to C. coffeae , particularly in conidiophore and conidial morphology ( Han et al. 2025). However, this species differs from C. coffeae in having longer conidiophores (up to 122 μm vs. 43–97 μm) and shorter conidia (11–16.2 μm vs. 20–50 μm) ( Han et al. 2025). Our multi-gene phylogenetic analysis strongly supports that our isolates ( GZCC 25–0638 and GZCC 25–0639 ) form a sister clade to C. patagonicus , with 94 % ML and 1.00 BYPP support (Fig. 1 ). Additionally, base pair comparison between C. qizhifengensis and C. patagonicus reveals 14 / 322 bp differences in ITS (4.3 %, including six gaps) and 6 / 613 bp differences in LSU (0.9 %, without gaps), further supporting their distinction as separate species. The sexual state of C. patagonicus is the only known form of this species ( Sánchez et al. 2012; Hyde et al. 2020; Ma et al. 2024 b). Therefore, based on both the multi-gene phylogenetic analysis and morphological differences, we introduce Camporesiomyces qizhifengensis as a new species.

Figures

Figure 1. Phylogenetic tree generated from the ML analysis, based on the combined ITS, LSU, tef 1 - α and rpb 2 sequence data. Bootstrap support values of ML equal to or greater than 75 % and Bayesian posterior probabilities (PP) equal to or greater than 0.95 are given near the nodes as ML / BYPP, respectively. The Maximum Likelihood (ML) and Bayesian Inference (BI) analyses yielded similar tree topologies. Hyphen (“ - ”) indicates a value lower than 75 % for ML and a posterior probability lower than 0.95 for BI. Botryosphaeria agaves (MFLUCC 10-0051) and B. dothidea (CBS 115476) were selected as outgroups (Lu et al. 2018 b). Ex-type strains are denoted with “ T ” and newly-obtained isolates are in bold black fonts.

Figure 2. Camporesiomyces qizhifengensis (HKAS 128896, holotype). a – c. Colonies on the host surface; d – h. Conidiophores and conidiogenous cells; i – p. Conidia; q. Germinated conidium; r, s. Colonies on PDA from below and above after 39 days of incubation at room temperature. Scale bars: 20 μm (d – h); 5 μm (i – q).