1. Means for controlling endoparasites, containing the carboxamide derivative represented by general formula (I): {wherein A represents (CC) alkylene group optionally substituted by a halogen atom, (CC) alkyl group and / or (CC) cycloalkyl group (CC) alkylene group which is optionally substituted by a halogen atom, (CC) alkyl group and / or (CC) cycloalkyl group and is modified by the inclusion in the carbon chain at least one heteroatom selected from an oxygen atom, a sulfur atom, -SO-, -SO- and -N (R) - (wherein R represents a hydrogen atom, (CC) alkyl group, (CC) cycloalkyl group, (CC) alkylcarbonyl group, or (CC) alkoxycarbonyl group) (CC) alkenylene group optionally substituted by a halogen atom, (CC) alkyl group and / or (CC) cycloalkyl group (C) an alkenylene group which is optionally substituted by a halogen atom, (CC) alkyl group and / or (CC) cycloalkyl group and is modified by the inclusion in the carbon chain at least one heteroatom selected from oxygen atom, sulfur, -SO-, -SO- and -N (R) - (where R is as defined above) (CC) alkynylene group optionally substituted with a halogen atom, (CC) alkyl group and / or (CC) cycloalkyl group or (CC) alkynylene group which is optionally substituted by a halogen atom, (CC) alkyl group and / or (CC) cycloalkyl group and is modified by the inclusion in the carbon chain at least one heteroatom selected from oxygen atom, sulfur atom , -SO-, -SO- and -N (R) - (wherein R is as
