Tityus dasyurus Pocock, 1897 . This species was described from “ Porto Rico ”, but Teruel et al. (2020: 12) suggested that it seems to be a South or Central American taxon.

Remarks. Of the 16 confirmed species of scorpions described from these Greater Antillean islands, four ( M. borincanus, M. santosi, T. alejandroi, T. angelesae) are known for a sex and only one or two adult specimens. Seven species, six of them belonging to the genus Tityus, are endemic of Puerto Rico Island; Vieques has two ones ( M. vieques and T. alejandroi), whereas Mona Island and Culebrita Island has one species each ( C. garridoi and M. santosi, respectively). At least two species ( C. bani and H. abudi) are shared with Hispaniola and one ( C. griseus) is also found in Virgin Islands. The only introduced species is I. maculatus .

Two species ( Centruroides jorgeorum Santiago-Blay, 2009 and C. sasae Santiago-Blay, 2009) remain to be confirmed and are not listed among the 16 confirmed ones; and one more species ( Tityus dasyurus Pocock, 1897) is possibly not a Puerto Rican taxon (Teruel et al., 2020).