| Nominative | ektoparazit |
| Genitive | ektoparazita |
| Dative | ektoparazitovi; ektoparazitu |
| Accusative | ektoparazita |
| Vocative | ektoparazite |
| Locative | ektoparazitovi; ektoparazitu |
| Instrumental | ektoparazitem |
| Nominative | ektoparaziti; ektoparazité |
| Genitive | ektoparazitů |
| Dative | ektoparazitům |
| Accusative | ektoparazity |
| Vocative | ektoparaziti; ektoparazité |
| Locative | ektoparazitech |
| Instrumental | ektoparazity |