A DNA construct comprising a polynucleotide operably linked to a heterologous promoter, wherein said polynucleotide encodes a Bacillus thuringiensis insecticidal toxin protein or insecticidal fragment thereof, active against a lepidopteran insect pest, wherein said insecticidal toxin protein comprises the polypeptide sequence-as set forth in SEQ ID NO:4 (TIC900), SEQ ID NO:8 (TIC403), SEQ ID NO:10 (TIC404), SEQ ID NO:30 (TIC434), SEQ ID NO:12 (TIC961), SEQ ID NO:14 (TIC962), SEQ ID NO:16 (TIC963), SEQ ID NO:18 (TIC965) or SEQ ID NO:20 (TIC966).