| Subject | English | Latin |
| agric. | Pear bacterial canker, Stone fruits bacterial canker, Trees bacterial canker, Citrus pit black, Citrus blast, Bean brown spot, Maize chocolate spot, Sorghum bacterial leaf spot | Pseudomonas holci |
| agric. | Pear bacterial canker, Stone fruits bacterial canker, Trees bacterial canker, Citrus pit black, Citrus blast, Bean brown spot, Maize chocolate spot, Sorghum bacterial leaf spot | Pseudomonas syringae pv. syringae |
| agric. | Pear bacterial canker, Stone fruits bacterial canker, Trees bacterial canker, Citrus pit black, Citrus blast, Bean brown spot, Maize chocolate spot, Sorghum bacterial leaf spot | Pseudonomas syringae |
| agric. | Pear bacterial canker, Stone fruits bacterial canker, Trees bacterial canker, Citrus pit black, Citrus blast, Bean brown spot, Maize chocolate spot, Sorghum bacterial leaf spot | Pseudomonas cerasi |
| agric. | pear tree | Pyrus communis |
| biol. | pear tree | Pirus montana var. rehderi Nakai |
| entomol. | pear tree beetle | Lagochirus funestus |
| nat.sc., agric. | pear tree psylla | Psyllia pyri |
| nat.sc., agric. | pear tree psylla | Psylla piri |
| nat.sc., agric. | pear tree psylla | Cacopsylla pyri |
| biol. | pear tree psylla | Psylla pyricola Foerst. |
| nat.res. | pear-tree | Pirus communis Lin. |
| agric. | pear-tree | Pyrus communis |
| entomol. | pear-tree oyster scale | Quadraspidiotus ostreaeformis |
| biol. | sand pear tree | Pyrus serotina Rehd. |
| entomol. | sinuate pear tree borer | Agrilus sinuatus |
| agric. | sinuate pear tree borer | Agrilus sunuatus |
| biol. | sinuate pear tree borer | Agrilus sinuatus Olivier |