Hypocreales » Ophiocordycipitaceae » Ophiocordyceps

Ophiocordyceps cossidarum

Ophiocordyceps cossidarum Y.P. Xiao, T.C. Wen, Zha & K.D. Hyde, in Hyde et al., Fungal Diversity 87: 153 (2017)

Index Fungorum number: IF553194; Faces of fungi number: FoF 3278

Parasitic in larvae of insect (Lepidoptera: Cossidae), collected from buried in forest soils near root of the tree. Sexual morph: Thallus within host. Stroma reddish-brown or cinnamon to brown on one end of the insect larva, mostly erect. Stroma usually solitary, simple, 40-70 mm high. Stipe simple, cylindrical, 25-65 mm long, 1-2 mm wide, depending on the one side of the insect larva. Fertile head distinctly sub-terminal with asexual state at apex. Ascomata 355–454 × 136–171 μm (x̄ = 405 × 153 µm, n = 30), immersed, red, ovate to phialide, red-walled. Peridium 26–35 mm (x̄ = 31 µm, n = 60) wide, red, three layer. Asci 174–221 × 5.7–7 μm (x̄ = 197 × 6.4 µm, n = 60) hyaline, cylindrical, 8-spored with a thickened apex. Apical cap 2.5–3.8 × 4.3–5.7 μm (x̄ = 3.1 × 5 µm, n = 60), hyaline. Ascospores 131–153 × 1.8–2.2 μm (x̄ = 142 × 2 µm, n = 60), hyaline, filiform, multiseptate breaking into 32 part-spores. Part spores 3.7–4.8 × 1.8–2.4 μm (x̄ = 4.2 × 2.1 µm, n = 60), hyaline, cylindrical and truncated at the ends. Asexual morph: Undetermined. (Hyde et al. 2017)

Known hosts and distributions: on larvae of insect (Lepidoptera: Cossidae) (Chiang Mai, Thailand) (Hyde et al. 2017).

Sequence data: MFLU 17-0752 (SSU = MF398186, LSU = MF398187, TEF = MF928403, RPB1 = MF928404). Phylogenetic tree (see entry: Ophiocordyceps issidarum) (Hyde et al. 2017)

 

 

Ophiocordyceps cossidarum (Material examined – THAILAND, Chiang Mai, The Mushroom Research Center, on larvae of insect (Lepidoptera: Cossidae), 19 August 2015, YP Xiao, MRC 15082202. (MFLU 17-0752, Holotype)). a Habitat. b Overview of the host and stromata. c Stroma. d Sub-terminal with asexual state at apex. e Cross section of stroma. f Cross sections showing the immersed perithecia. g–i Perithecia. j Peridium. k–o Immature to mature asci. p–r Part of ascospores. s Ascospores. Scale Bars: c, f, g = 1000 µm, d, h, i = 200 µm, e = 400 µm, l–o = 100 µm, j, k, p, q = 50 µm, r = 20 µm, s = 5 µm (Hyde et al. 2017)

 

References:

Hyde KD, Norphanphoun C, Abreu VP, Bazzicalupo A, Chethana KT, Clericuzio M et al. 2017 – Fungal diversity notes 603–708: taxonomic and phylogenetic notes on genera and species. Fungal Diversity 87(1): 1–235.

 

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