Revision of the genus Restingomyces, including two new species from Mexico

ABSTRACT

To document sequestrate fungal diversity in American tropical regions, we performed a series of field surveys in southeastern Mexico and discovered two new species in the phalloid genus Restingomyces (Trappeaceae, Phallales). Here, we describe them based on morphological and phylogenetic analyses of mitochondrial adenosine triphosphatase (ATPase) subunit 6 and nuc 28S rDNA. Restingomyces guzmanianus is characterized by the brownish peridium, yellowish brown gleba, and ellipsoid basidiospores, whereas R. yaaxtax is characterized by the white peridium, pale green gleba, and small ellipsoid basidiospores. Both species occur in medium-statured tropical dry forest. The original diagnosis of the genus Restingomyces is emended to include these novel species. Illustrations are provided.

KEYWORDS:

• Basidiomycota
• Phallales
• sequestrate fungi
• Trappeaceae
• tropical fungi
• truffle-like fungi
• 2 new taxa

ACKNOWLEDGMENTS

Javier Isaac de la Fuente thanks Karina Can, León Ibarra, Caribell Yuridia López, and Danna Lizeth Trejo-Arroyo for technical support. The authors also thank CONACYT and ECOSUR for providing SEM equipment as well as Rasmus Puusepp for help with molecular analysis. Lastly, the authors thank the three anonymous reviewers, whose comments greatly improved this work.

Additional information

Funding

García-Jiménez thanks TNM-ITCV for financial support. This work was supported by Kungliga Vetenskapsakademien and the Estonian Research Council under grant no. PRG632.