Lithothelium illotum
- kingdom: Fungi
- phylum: Ascomycota
- class: Eurotiomycetes
- order: Pyrenulales
- family: Pyrenulaceae
- genus: Lithothelium
- species: Lithothelium illotum
Calle Blancos
Guadalupe
Purral
Sabanilla
San Pedro
San José
Costa RicaJohor Bahru
Johor
Malaysia