Citrus black spot (Phyllosticta citricarpa) is a fungal pathogen of Citrus, almonds, avodado, mangos etc.. It is a native of Africa and Australasia and was first detected in Florida in 2010.
Black spot of citrus is a serious disease of citrus cultivars in Australia, Guangdong province in China and South Africa.
For more information about this plant pest, see the CABI data sheet.