Cordyceps duyunensis D. Li, W.H. Chen, Y.F. Han & J.D. Liang, 2024

Li, Dan, Chen, Wan-Hao, Shu, Hui-Lin, Tian, Xiao-Li, Liang, Jian-Dong & Han, Yan-Feng, 2024, Cordyceps duyunensis, a new species from Doupeng Mount, Guizhou, China, Phytotaxa 677 (2), pp. 144-154 : 149

Cordyceps duyunensis D. Li, W.H. Chen, Y.F. Han & J.D. Liang , sp. nov. ( Fig. 2 )

Fungal Names No : 572127

Etymology: —Referring to the location, Duyun City, where the type specimen was collected.

Type: — CHINA. Guizhou: Qiannan Buyei and Miao Autonomous Prefecture, Duyun City, Doupeng Mount (26°21'24.71"N, 107°22'48.22"E), on a pupa ( Lepidoptera ), 1 October 2019, Wanhao Chen, GZAC DY10132 (holotype), ex-type living culture, DY101321.

Colonies on PDA, attaining a diameter of 51–60 mm after 14 d at 25 °C, white, consisting of a basal felt and cottony, floccose overgrowth, and the middle mycelium is dense and convex, reverse yellowish to orange. Prostrate hyphae smooth, septate, hyaline, 1.8–2.1 μm wide. Conidial structures consisting of erect conidiophores usually arising from the aerial hyphae, solitary or verticillium-like with phialides in whorls of two. Phialides 10.7–28.2 × 1.3–1.8 μm, with a cylindrical basal portion, tapering into a distinct neck, solitary or in whorl of two. Conidia hyaline, cylindrical to ellipsoidal, 4.3–10.8 × 1.3–3.4 μm. Octahedral crystals not observed.

Host: —Pupa ( Lepidoptera ).

Additional material examined: — CHINA. Guizhou: Qiannan Buyei and Miao Autonomous Prefecture, Duyun City , Doupeng Mount (26°21'24.71"N, 107°22'48.22"E) on a pupa ( Lepidoptera ), 1 October 2019, Wanhao Chen, DY 101322 (living culture) ; on a pupa ( Lepidoptera ), 1 October 2019, Wanhao Chen, DY10133 (specimen), DY101331, DY101332 (living culture).

Figures

FIGURE 2. Cordyceps duyunensis. A. Infected pupa (Lepidoptera). B, C. PDA culture plate showing top (B) and reverse (C) sides of the colony. D–J. Phialides and conidia. Scale bars: B, C = 10 mm, D–J = 10 μm.