Spiropiperidine derivatives for controlling pests

摘要

The use of a compound of Formula (I), Y is a single bond, C-O, C-S or S(O)m where m is 0, 1 or 2; the ring represented by T is a 5 or 6 membered heteroaromatic and R¹, R², R³, R⁸ and Ra are specified organic groups and p is 0, 1, 2, 3, 4, 5 or 6; p+q is 1, 2, 3, 4, 5 or 6; or salts or N-oxides thereof or compositions containing them in controlling insects, acarines, nematodes or molluscs; novel compounds are also provided.