The new for science genus Loekoeslaszloa S. Y. Kondr. et J.-S. Hur, confirmed by three gene phylogeny of the subfamily Teloschistoideae of the Teloschistaceae based on nrITS, nrLSU and mtSSU sequences, and ten new to science species from Eastern Asia, i.e. from South Korea: Bacidina loekoesiana S. Y. Kondr. et J.-S. Hur, Fauriea jejuensis S. Y. Kondr., L. Lőkös et J.-S. Hur, Gyalecta ulleungdoensis S. Y. Kondr., L. Lőkös et J.-S. Hur, Loekoeslaszloa huriana S. Y. Kondr., Orientophila dodongana S. Y. Kondr., L. Lőkös et J.-S. Hur, O. imjadoensis S. Y. Kondr., L. Lőkös et J.-S. Hur, O. incheonensis S. Y. Kondr., L. Lőkös et J.-S. Hur, Oxneriopsis taehaensis S. Y. Kondr., L. Lőkös et J.-S. Hur, Yoshimuria ivanpisutiana S. Y. Kondr., L. Lőkös et J.-S. Hur and Y. seokpoensis S. Y. Kondr., L. Lőkös et J.-S. Hur are described, illustrated and compared with closely related taxa.
Molecular data for the recently described species Flavoplaca laszloana are for the first time provided. Position of Tassiloa magellanica in the subfamily Teloschistoideae as well as Yoshimuria stipitata in the Ikaerioideae ad int. is for the first time illustrated.
An identification key to Fauriea species (including six species, i.e.: F. chujaensis, F. jejuensis, F. orientochinensis, F. patwolseleyae, F. tabidella and F. yonaguniensis), a key to Orientophila species of the Eastern Asian region (of the Orientophila loekoesii and the O. diffluens groups), and a key to Yoshimuria and Loekoeslaszloa species of the Eastern Asian region (including four species, i.e.: Y. galbina, Y. ivanpisutiana, Y. seokpoensis, and Y. spodoplaca, as well as Loekoeslaszloa geumohdoensis and L. huriana) are presented. Seven new combinations, i.e. Fauriea patwolseleyae (basionym: Caloplaca patwolseleyae S. Y. Kondr., U. Jayalal et J.-S. Hur), Fauriea tabidella (basionym: Lecanora tabidella Nyl.), Loekoeslaszloa geumohdoensis (basionym: Mikhtomia geumohdoensis S. Y. Kondr., D. Liu et Hur), Niesslia coarctatae (basionym: Stigmidium coarctatae S. Y. Kondr., L. Lőkös et J.-S. Hur), Opeltia epiphyta (basionym: Caloplaca epiphyta Lynge), Tassiloa magellanica (basionym: Caloplaca magellanica Søchting et Sancho) and Yoshimuria stipitata (basionym: Caloplaca stipitata Wetmore) are proposed. Yoshimuria galbina and Lecanora ussuriensis are for the first time recorded from Japan.