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| Column-$I$ | Column-$II$ |
| $(a)$. $A$ vector of disease | $(i)$ Bombyx |
| $(b)$. $A$ gregarious pest | $(ii)$ Limulus |
| $(c)$. $A$ living fossil | $(iii)$ Locusta |
| $(d)$. An economically important insect | $(iv)$ Culex |
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