方头甲科的许多虫种是盾蚧科害虫的重要捕食天敌。据国内外资料报道,初步统计方头甲科的37个虫种能有效捕食桑盾蚧(Pseudaulacaspis penlagona Targ.)、枣星盾蚧(Parlatoria blanchardi Targ.)、椰圆蚧(Aspidiotus destructor Sign.)等15种盾蚧科害虫。日本野原(Nohara, 1963)、立川哲三郎(1964)曾报道方头甲(Cybo- Many insects of the squaricidae are important predators of the insects. According to the domestic and foreign data reports, the preliminary statistics of 37 species of Tianecidae can effectively prey on Psidium punctifolia (Pseudaulacaspis penlagona Targ.), Jujube sarcandra (Parlatoria blanchardi Targ.), Coconut scale (Aspidiotus destructor Sign.) 15 kinds of shield scales Division pests. Japanese wild (Nohara, 1963), Tetsugi Tachikawa (1964) had reported that the first armor (Cybo-