Samsoniella lepidopterorum 2020

Samsoniella lepidopterorum W.H. Chen, Y.F. Han & Z.Q. Liang 2020

MycoBank No: 831737

Holotype: China, Guizhou Province, Rongjiang County (26°01'56.13"N, 108°24'48.06"E), October 2018, Wanhao Chen, holotype GZAC DL1007 = RJ1807, ex-type culture GZAC DL10071 = RJ18071. Sequences from isolated strain DL10071 have been deposited in GenBank with accession numbers: ITS = MN128076, RPB1 = MN101592, RPB2 = MN101593 and TEF = MN101594.

Morphological description

Colonies on PDA, 3.7–3.8 cm diam. in 14 d at 25 °C, white, consisting of a basal felt and cottony, floccose hyphal overgrowth, reverse yellowish. Prostrate hyphae smooth, septate, hyaline, 1.1–2.2 μm diam. Erect conidiophores usually arising from aerial hyphae, Isaria-like with phialides in whorls of two to four. Phialides 5.2–8.5 (–13.1) × 1.1–1.7 μm, with an ellipsoidal basal portion, tapering into a distinct neck. Conidia in chains, hyaline, fusiform to subglobose, 1-celled, 2.0–2.5 × 1.2–2.0 μm. Chlamydospores and synnemata not observed. Size and shape of phialides and conidia similar in culture and on natural substratum. Sexual state not observed.

Habitat: Pupa, order Lepidoptera

Distribution: Rongjiang County, Guizhou Province, China

GenBank Accession: ITS = MN128076, RPB1 = MN101592, RPB2 = MN101593 and TEF = MN101594.

Notes: 

Reference: Chen W-H, Han Y-F, Liang J-D et al.(2020) Morphological and phylogenetic characterisations reveal three new species of Samsoniella (Cordycipitaceae, Hypocreales) from Guizhou, China. MycoKeys 74: 1–15. https://doi.org/10.3897/mycokeys.74.56655

Samsoniella lepidopterorum A infected insect pupa (Lepidoptera) B, C top (B) and underside (C) of a colony cultured on PDA medium at 14 d D–G, I phialides and conidia in chains H conidia J conidiophore and phialides. Scale bars: 10 mm (B, C); 10 μm (D–J).