| Subject | Spanish | English |
| nat.sc., agric. | cherna arlequín | harlequin hind (Cephalopholis polleni) |
| entomol. | chinche arlequín Murgantia histrionica (Hahn) | fire bug |
| entomol. | chinche arlequín Murgantia histrionica (Hahn) | harlequin bug |
| med. | feto arlequín | harlequin fetus |
| nat.res. | pato arlequín | harlequin (Histrionicus histrionicus) |
| ichtyol. | tollo coludo arlequín Ctenacis fehlmanni | harlequin catshark |
| environ., nat.res. | tragopan arlequín | Cabot's tragopan (Tragopan caboti) |