Trapelia thieleana is a lichenised fungus in the family, Trapeliaceae.[1] It was first described in 2014 by the mycologists, Gintaras Kantvilas, Steven Leavitt, John Elix and Thorsten Lumbsch.[1]
It has been found in mallee woodland, on loose stones and outcrops of ironstone,[2] in Western Australia, and on Kangaroo Island in South Australia.[2] [3]
It is distinguishable from T. coarctata by the bright yellow pigment patches on its upper surface.