Trapelia thieleana is a lichenised fungus in the family, Trapeliaceae.

[1][2] It was first described in 2014 by the mycologists, Gintaras Kantvilas, Steven Leavitt, John Elix and Thorsten Lumbsch.

[1][2] It has been found in mallee woodland, on loose stones and outcrops of ironstone,[3] in Western Australia, and on Kangaroo Island in South Australia.

[3][4] It is distinguishable from T. coarctata by the bright yellow pigment patches on its upper surface.

[3]