Phymastichus coffea LaSalle (Hymenoptera:Eulophidae) is an adult endoparasitoid of the coffee berry borer, Hypothenemus hampei (Ferrari) (Coleoptera:Curculionidae:Scolytinae), which has been introduced in many coffee producing countries as a biological control agent. To determine the effectiveness of P. coffea against H. hampei and environmental safety for release in Hawaii, we investigated the host selection and parasitism response of adult females to 43 different species of Coleoptera, including 23 Scolytinae (six Hypothenemus species and 17 others), and four additional Curculionidae. Non-target testing included Hawaiian endemic, exotic and beneficial coleopteran species. Using a no-choice laboratory bioassay, we demonstrated that P. coffea was only able to parasitize the target host H. hampei and four other adventive species of Hypothenemus: H. obscurus, H. seriatus, H. birmanus and H. crudiae. Hypothenemus hampei had the highest parasitism rate and shortest parasitoid development time of the five parasitized Hypothenemus spp. Parasitism and parasitoid emergence decreased with decreasing phylogenetic relatedness of the Hypothenemus spp. to H. hampei, and the most distantly related species, H. eruditus, was not parasitized. These results suggest that the risk of harmful non-target impacts is low because there are no native species of Hypothenemus in Hawaii, and P. coffea could be safely introduced for classical biological control of H. hampei in Hawaii.

Phymastichus coffea LaSalle（膜翅目：Eulophidae）是咖啡果蛀虫Hypothenemus hampei（法拉利）（Coleoptera：Curculionidae：Scolytinae）的成虫内寄生物，已在许多咖啡生产国作为生物防治剂被引入。为了确定P. coffea对H. hampei的有效性和在夏威夷释放的环境安全性，我们调查了成年雌性对43种不同鞘翅目物种的寄主选择和寄生反应，其中包括23种鞘翅目（六个Hy鱼）种和另外17种），以及另外4种Curculionidae。非目标测试包括夏威夷特有的，外来的和有益的鞘翅目物种。使用无选择室内生物测定，我们证明了P.小果是只能寄生于目标主机H. hampei和其他四个不定种Hypothenemus：H.暗纹，H. seriatus，H. birmanus和H. crudiae。在五种被寄生的猪上丘脑属菌中，Hypothenemus hampei的寄生率最高，寄生虫发生时间最短。副寄生虫和类副寄生虫的出现随着下丘脑物种的系统发育相关性的降低而降低。到H. hampei，和最远相关的物种，H。eruditus，没有被寄生。这些结果表明，有害的非靶标影响的风险很低，因为在夏威夷没有天然的上丘脑假单胞菌，并且可以安全地将咖啡棕引入夏威夷的H. hampei的经典生物防治中。