A compound of formula (I): ** Formula ** in which - X1 and X2, which may be the same or different, represent a halogen atom； - Y represents a C1-C4 alkyl； - T represents O or S； - W represents CZ4Z5； OR； S； SW； SO2； NZ6； SiZ7Z8； or -C (>； = U) -； - B represents a phenyl ring that may be substituted by up to 5 X groups that may be the same or different； a naphthyl ring that may be substituted by up to 7 X groups that may be the same or different； or a saturated, partially saturated or unsaturated, monocyclic or bicyclic fused ring of 4, 5, 6, 7, 8, 9, 10 members comprising 1 to 4 heteroatoms selected from the list consisting of N, O, S, which it can be substituted by up to 6 X groups that can be the same or different； -X represents a halogen atom； nitro； cyano； isonitrile； hydroxy； Not me； sulfanyl； pentafluoro-λ6-sulfanyl； formyl； formyloxy； formylamino； a substituted or unsubstituted (hydroxy-imino) -C 1 -C 8 alkyl group； (C1-C8 alkoxy-imino) -C1-C8 alkyl； (C2-C8 alkenyloxy-imino) -C1-C8 substituted or unsubstituted alkyl； (C2-C8 alkynyloxy-imino) -C1-C8 substituted or unsubstituted alkyl； (benzyloxy-imino) -C1-C8 substituted or unsubstituted alkyl； carboxy； carbamoyl； N-hydroxycarbamoyl； carbamate； C1-C8 substituted or unsubstituted alkyl； C1-C8 halogenoalkyl having 1 to 5 halogen atoms； C2-C8 substituted or unsubstituted alkenyl； C2-C8 halogenoalkenyl having 1 to 5 halogen atoms； C2-C8 substituted or unsubstituted alkynyl； C2-C8 halogenoalkynyl having 1 to 5 halogen atoms； C1-C8 substituted or unsubstituted alkoxy； C1-C8 halogenoalkoxy having 1 to 5 halogen atoms； C1-C8 substituted or unsubstituted alkylsulfanyl； C1-C8 halogenoalkoxysulfanyl having 1 to 5 halogen atoms； C1-C8 substituted or unsubstituted alkylsulfinyl； C1-C8 halogenoalquisulfinyl having 1 to 5 halogen atoms； C1-C8 substituted or unsubstituted alkylsulfonyl； C1-C8 halogenoalquisulfonyl having 1 to 5 halogen atoms； C1-C8 substituted or unsubstituted alkylamino； C1-C8 substituted or unsubstituted
