Morphological and molecular analyses reveal two new species of Termitomyces (Agaricales, Lyophyllaceae) and morphological variability of T. intermedius

By

Tang, Song-Ming
Vadthanarat, Santhiti
He, Jun
Raghoonundon, Bhavesh
Yu, Fengming
Karunarathna, Samantha C.
Li, Shu Hong
Raspé, Olivier

Type

Article

Date of Publication

2023

Original Publication

Journal of Hymenoptera research

Volume

95

Pages

61--82

Subjects

2 new species , Morphology , multi-gene phylogeny , taxonomy , tropical Asia , Yunnan

Contributed by

Pensoft Publishers

Language

English

Published by

Washington, D.C International Society of Hymenopterists

Identifiers

DOI: https://doi.org/10.3897/mycokeys.95.97156

 

Abstract

Two new species, Termitomyces tigrinus and T. yunnanensis are described based on specimens collected from southwestern China. Termitomyces yunnanensis is morphologically characterized by a conspicuously venose pileus surface that is grey, olive grey, light grey to greenish grey at center, light grey towards margin, and a cylindrical white stipe. Termitomyces tigrinus is morphologically characterized by a densely tomentose to tomentose-squamulose pileus showing alternating greyish white and dark grey zones, and a stipe that is bulbous at the base. The two new species are supported by phylogenetic analyses of combined nuclear rDNA internal transcribed spacer ITS1-5.8S-ITS2 rDNA (ITS), the mitochondrial rDNA small subunit (mrSSU) and the nuclear rDNA large subunit (nrLSU). The morphological variability of T. intermedius, including five specimens newly collected from Yunnan Province, China, is also discussed. The collections showed variability in colour of the stipe surface and in the shape of cheilocystidia when compared to the original description. Full descriptions of the two new species and of T. intermedius, as well as a taxonomic key to the 14 Termitomyces species reported from China are provided.