Polycephalomyces multiperitheciatae Hong Yu bis, Z. H. Liu & D. X. Tang

Liu, Zuoheng, Tang, Dexiang, Lu, Yingling, Zhu, Juye, Luo, Lijun, Sun, Tao & Yu, Hong, 2024, Morphology and phylogeny of four new species within Polycephalomycetaceae (Hypocreales) parasitising Ophiocordyceps species, MycoKeys 105, pp. 179-202 : 179-202

publication ID

https://doi.org/ 10.3897/mycokeys.105.119893

DOI

https://doi.org/10.5281/zenodo.11204864

persistent identifier

https://treatment.plazi.org/id/799A5657-2B7C-5256-858B-AA094FBD291D

treatment provided by

MycoKeys by Pensoft

scientific name

Polycephalomyces multiperitheciatae Hong Yu bis, Z. H. Liu & D. X. Tang
status

sp. nov.

Polycephalomyces multiperitheciatae Hong Yu bis, Z. H. Liu & D. X. Tang sp. nov.

Fig. 4 View Figure 4

Etymology.

The species name referred to the host species, Ophiocordyceps multiperitheciata .

Diagnosis.

Polycephalomyces multiperitheciatae are similar to that of Po. jinghongensis regarding the production of α-conidia oval, but Po. jinghongensis differ by being parasitic on O. multiperitheciata , synnemata clustered, white, β-conidia, linear.

Holotype.

China, Yunnan Province, Honghe Hani and Yi Autonomous Prefecture, Yuanyang County, parasitic on Ophiocordyceps multiperitheciata ( Ophiocordycipitaceae ), on insects buried in soil, with erect stromata, 22 ° 1 ′ 51 ″ N, 100 ° 52 ′ 42 ″ E, alt. 703 m, 25 September 2022, Hong Yu bis ( YHH 2206031 ) GoogleMaps .

Sexual morph.

Undetermined.

Asexual morph.

Synnemata arising from the stromata of Ophiocordyceps multiperitheciata , 0.8–1.8 cm long 0.2–0.5 cm thick, clustered, white to pale yellow, numerous, branched, with fertile head. Colonies on PDA growing slowly, attaining a diameter of 1.8–2.1 cm in 3 weeks at 25 ° C, clustered, white and reverse dry yellow. Synnemata emerging after 15 days, solitary, branched and 0.8–2.1 cm long, showing radiating distributions. Phialides existing in two types: α- and β-phialides. Both types of phialides often reproduce new conidia at their own apices or sides, collarettes not flared, periclinal thickening not visible. α-phialides verticillate and acropleurogenous on conidiophores and solitary on hyphae; spear point, tapering gradually from the base to the apex, 10.5–18.7 μm long, 1.1–1.9 μm wide at the base and 0.4–0.6 μm wide at the apex. β-phialides acropleurogenous in whorls of 2–3 or intercalary and terminal on conidiophores and solitary on hyphae; subulate, tapering abruptly from the base to the apex, 11.3–28.8 μm long, 1.2–2.5 μm wide at the base and 0.5–1.1 μm wide at the apex. α-conidia, oval and occurring in the conidial mass on the agar or on the final portion of synnemata, 0.6–1.1 × 0.3–0.6 μm; β-conidia, linear and produced on the surface mycelium of colony, multiple, usually formed as spore balls at the phialidic apex, 0.8–1.3 × 0.3–0.7 μm.

Host.

Parasitic on Ophiocordyceps multiperitheciata ( Ophiocordycipitaceae ).

Distribution.

China, Yunnan Province.

Material examined.

China, Yunnan Province, Honghe Hani and Yi Autonomous Prefecture, Yuanyang County, parasitic on Ophiocordyceps multiperitheciata ( Ophiocordycipitaceae ), on insects buried in soil, with erect stromata, 22 ° 1 ′ 51 ″ N, 100 ° 52 ′ 42 ″ E, alt. 703 m, 25 September 2022, D. X. Tang GoogleMaps . Paratypes: YHH 2209032 ; other collections: YHH 2209033 ; YHH 2209034 . Culture ex-type: YFCC 06149287 ; Other cultures: YFCC 06149288 , YFCC 06149289 , YFCC 06149290 , YFCC 06149291 , YFCC 06149292 .

Notes.

Polycephalomyces multiperitheciatae is sister to Po. jinghongensis (Fig. 1 View Figure 1 : BS = 100 %, BPP = 1.00). Po. multiperitheciatae is distinct from other species of Polycephalomyces , parasitising Ophiocordyceps multiperitheciata synnemata clustered, with fertile head, β-conidia, linear (Table 3 View Table 3 ). Thus, Po. multiperitheciatae was introduced as a new species under the genus Polycephalomyces .