This species appears to be native to the Atlantic coastal region of Brazil from Rio de Janeiro state to Rio Grande do Sul. It has a broad host range,but it has been most commonly collected from black-rotted corms of Colocasia esculenta found in grocerystores, markets, and distribution centers in Brazil(Harrington et al. 2005, 2011; Oliveira et al. 2018).Inoculation studies suggest that Colocasia isolates aremore aggressive on Araceae than are other Ceratocystis isolates from Brazil (Thorpe et al. 2005). Ceratocystis atlantica also causes a wilt on Mangifera and Annonasquamosa in northeastern Rio de Janeiro state (Bakeret al. 2003; Oliveira et al. 2015b; Silveira et al. 2006). This species and the very closely related C. manginecans sensu lato are the only Ceratocystis species causing wiltand mortality of Mangifera, but C. manginecans has been much more widely distributed in Brazil (notably São Paulo) and internationally (Oliveira et al. 2015b). C. atlantica was reported on Actinidia from one farm in Rio Grande do Sul (Ferreira et al. 2017) and on Eucalyptus in Paraná, although it is not clear how common or important this species is on Eucalyptus. The tested isolates of C. atlantica from the above hosts were interfertile with the C. atlantica MAT1 tester strainfrom Mangifera (TABLE 2), and they formed a monophyletic group closely related to C. manginecans and C. fimbriata using MAT sequences(FIG. 1). Like C. manginecans, C. atlantica shows substantial variation in ITS sequences due to numerouslinked indels (FIG. 2).

BRAZIL. RIO DE JANEIRO: City of Riode Janeiro, from Colocasia esculenta, Oct 2001,T. Harrington (holotype ISC 455944). Ex-type culture CBS 114713 = URMICRO 11730 = C1865.