Two Arundo donax biological control agents, Tetramesa romana, the arundo wasp, and Rhizaspidiotus donacis, the arundo scale, have been established in Texas, USA and Morelos, Mexico for ten years. A survey was conducted in these areas to determine if there was any use of non-target plant species, especially where the biological control agents occurred at high densities. We found no non-target use in examinations of over 1500 plant specimens representing 5 native grasses, 6 introduced grasses, 2 crop grasses, and one broadleaf species. The survey included the most closely related plant species Phragmites australis, common reed, which is sympatric with A. donax in riparian habitats, and also specimens of Zizania texana, Texas wild rice, a Federally listed endangered aquatic grass species in Central Texas. The field (realised) host range of T. romana and R. donacis confirms the predicted host range of these species from quarantine host range testing.

在美国得克萨斯州和墨西哥的莫雷洛斯州已经建立了两种Arundo donax生物防治剂，分别是romona romana（arundo黄蜂）和rhizaspidiotus donacis（arundo鳞片）。在这些地区进行了一项调查，以确定是否使用了非目标植物，特别是在高密度发生生物防治的地方。在对代表5种原生草，6种引入草，2种农作物草和1种阔叶植物的1500多种植物标本的检查中，我们没有发现非目标用途。该调查包括最密切相关的植物物种芦苇，共同的芦苇，它与河岸生境中的A. donax同养，还包括Zizania texana，得克萨斯州野生稻，一种在联邦政府名录中在得克萨斯州中部濒危的水生草种。T. romana和R. donacis的田间（已实现）寄主范围通过隔离寄主范围测试确定了这些物种的预测寄主范围。