Unknown
| Common name (English) | |
|---|---|
| Chalcionellus decemstriatus | |
| Chenopodium hircinum | Foetid Goosefoot |
| Chenopodium strictum | |
| Chondria coerulescens | |
| Cirrospilus ingenuus | |
| Citrus tristeza virus | |
| Clavelina lepadiformis | Light bulb tunicate |
| Clavibacter michiganensis michiganensis | Bacterial canker of tomato |
| Coccotrypes dactyliperda | Date stone beetle; Palm seed borer; Button beetle |
| Coccus longulus | Long brown scale |
| Coloradoa rufomaculata | |
| Colpomenia peregrina | Brown algae |
| Copidosoma koehleri | |
| Corticaria fulva | |
| Corticaria serrata | |
| Cryptophagus laticollis | |
| Cryptophagus pilosus | |
| Cryptophilus integer | |
| Cutleria multifida | |
| Cyclamen creticum | Cretan sowbread |