Correspondence of criteria to classify <i>Parasmittina</i> species as exotic in the SW Atlantic (acc. Chapman & Carlton, 19991, 1994; Miranda <i>et al</i>. 2008; Xavier <i>et al</i>. 2021), with the respective number of positive/negative criteria used.

0, criterion not applicable due to lacking data; +, criterion applied positively to exotic status; −, criterion applied negatively to exotic status. N = number of attributes applied positively/negatively. Local criteria: 1 = local appearance where not found previously, 2 = local dispersal after introduction, 3 = association with human mechanisms of dispersal, 4 = prevalence or restriction to new or artificial environment, 5 = restricted distribution when compared to ecologically similar native species. Global criteria: 6 = widespread geographic distribution with isolated populations, 7 = active and passive dispersal mechanisms incapable of achieving the current distribution, 8 = exotic evolutionary origin. Status: E = exotic, C = cryptogenic.