| Subject | English | Latin |
| entomol. | European pear scale | Epidiaspis leperii |
| biol. | grey pear scale | Epidiaspis leperli (Signoret) |
| entomol. | Italian pear scale | Epidiaspis leperii |
| nat.sc., agric. | Italian pear scale | Epidiaspis betulae |
| nat.sc., agric. | Italian pear scale | Diaspis leperii |
| biol. | Italian pear scale | Epidiaspis piricola Del Guer |
| biol. | Japanese pear scale | Coccus bituberculatus Targioni |
| entomol. | pear oyster scale | Diaspidiotus ostreaeformis |
| nat.sc., agric. | pear oystershell scale | Mytilococcus rubri |
| nat.sc., agric. | pear oystershell scale | Lepidosaphes conchiformioides |
| nat.sc., agric. | pear oystershell scale | Lepidosaphes ficus |
| nat.sc., agric. | pear oystershell scale | Lepidosaphes rubri |
| nat.sc., agric. | pear oystershell scale | Mytilococcus conchiformioides |
| nat.sc., agric. | pear oystershell scale | Mytilococcus minima |
| nat.sc., agric. | pear oystershell scale | Mytilococcus conchiformis |
| nat.sc., agric. | pear oystershell scale | Mytilocco cus ficus |
| nat.sc., agric. | pear oystershell scale | Lepidosaphes minima |
| nat.sc., agric. | pear oystershell scale | Lepidosaphes conchiformis |
| biol. | pear oystershell scale | Lepidosaphes conchiformoides Gmelin. |
| entomol. | pear scale | Quadraspidiotus pyri |
| biol. | pear white scale | Leucaspis japonica Cockerell |
| gen. | Pear white scale Japan | Leucaspis japonica |
| gen. | Pear white scale Japan | Leucaspis japonicus |
| gen. | Pear white scale Japan | Lopholeucaspis japonica |
| gen. | Pear white scale Japan | Lopholeucaspis japonicus |
| entomol. | pear-tree oyster scale | Quadraspidiotus ostreaeformis |
| entomol. | prickly pear scale | Diaspis echinocacti |
| entomol. | southern pear scale | Quadraspidiotus marani |