The present invention provides compounds of formula (I)whereinP is P0, heterocyclyl or heterocyclyl substituted by one to five Z;Y1, Y2, Y3 and Y4 are independently of each other C-H, C-R5, or nitrogen;G1 is oxygen or sulfur;X4 is C1-C8haloalkyl;R4 is aryl or aryl substituted by one to five R9, or heteroaryl or heteroaryl substituted by one to five R9; and R1, R2, R4, R5, R9 and Z are as defined in the claims.The invention also provides compositions comprising the compounds of formula(I), intermediates useful in the preparation of compoudns of formula (I) and methods of using the compounds of formula (I) to control insects, acarines, nematodes or molluscs.