| Subject | French | English |
| entomol. | arlequin de l'épinette | spruce harlequin (Palthis angularis) |
| environ., nat.res. | arlequin plongeur | harlequin duck (Histrionicus histrionicus) |
| ornit. | barbu arlequin | gaudy barbet (Chotorea mystacophanos, Megalaima mystacophanos) |
| ornit. | caille arlequin | harlequin quail (Coturnix delegorguei) |
| ornit. | chevalier arlequin | spotted redshank (Tringa erythropus) |
| nat.res. | chevalier arlequin | spotted redshank (Tringa erythropus) |
| nat.sc., agric. | colin arlequin | Montezuma quail (Cyrtonyx montezumae montezumae) |
| nat.sc., agric. | colin arlequin de Mearns | Mearn's montezuma quail (Cyrtonyx montezumae mearnsi) |
| ornit. | colombine arlequin | flock pigeon (Histriophaps histrionica, Phaps histrionica) |
| fish.farm. | crapet arlequin | pumpkin-seed (Eupomotis gibbosus, Lepomis gibbosus) |
| ichtyol. | crapet arlequin | bluegill (Lepomis macrochir) |
| ichtyol. | crapet arlequin | common bluegill (Lepomis macrochir) |
| ichtyol. | crapet arlequin | bluegill sunfish (Lepomis macrochir) |
| ichtyol. | crapet arlequin | blue sunfish (Lepomis macrochir) |
| nat.res., fish.farm. | crapet arlequin | bluegill (Lepomis macrochirus) |
| ichtyol. | diagramme arlequin | many-spotted sweetlips (Plectorhynchus chaetodonoides) |
| ichtyol. | diagramme arlequin | harlequin sweetlips (Plectorhynchus chaetodonoides) |
| hobby, cultur. | draperie d'arlequin | tormentors |
| ornit. | fourmilier arlequin | harlequin antcatcher (Rhegmatorhina berlepschi) |
| ornit. | fourmilier arlequin | harlequin antbird (Rhegmatorhina berlepschi) |
| med. | fœtus arlequin | harlequin fetus |
| zool. | garrot arlequin | harlequin duck (Histrionicus histrionicus) |
| nat.res. | garrot arlequin | harlequin duck (Histrionicus histrionicus) |
| ornit. | garrot arlequin | harlequin duck (Histrionicus) |
| nat.res. | garrot arlequin | harlequin (Histrionicus histrionicus) |
| zool. | garrot arlequin | harlequin (Histrionicus histrionicus) |
| environ., nat.res. | grand arlequin | harlequin duck (Histrionicus histrionicus) |
| nat.res. | grenouille arlequin | harlequin frog (Atelopus varius) |
| gen. | habit d'arlequin | Harlequin costume |
| gen. | habit d'arlequin | Harlequin suit |
| ornit. | lori arlequin | blue-tailed lory (Eos histrio) |
| ornit. | lori arlequin | red-and-blue lory (Eos histrio) |
| ornit. | lori arlequin | blue-diademed lory (Eos histrio) |
| environ., nat.res. | lori arlequin | red and blue lory (Eos histrio) |
| reptil. | lézard-arlequin | Indian bloodsucker (Calotes versicolor) |
| reptil. | lézard-arlequin | Indian garden lizard (Calotes versicolor) |
| reptil. | lézard-arlequin | bloodsucker (Calotes versicolor) |
| hobby, cultur. | manteau d'arlequin | tormentors |
| hobby, cultur. | manteau d'Arlequin | tormentor |
| ornit. | pic arlequin | ladder-backed woodpecker (Dendrocopos scalaris, Picoides scalaris) |
| entomol. | punaise arlequin | harlequin bug (Murgantia histrionica) |
| ichtyol. | Requin chat arlequin Ctenacis fehlmanni | harlequin catshark |
| ichtyol. | requin-chat arlequin | harlequin cat shark (Ctenacis fehlmanni) |
| reptil. | serpent-arlequin | harlequin snake (Micrurus fulvius) |
| reptil. | serpent-arlequin | eastern coral snake (Micrurus fulvius) |
| reptil. | serpent-arlequin | bead snake (Micrurus fulvius) |
| nat.sc., agric. | tragopan arlequin | Cabot's tragopan (Tragopan caboti) |
| nat.sc., agric. | vieille arlequin | harlequin hind (Cephalopholis polleni) |