Brown marmorated stink bug (BMSB), Halyomorpha halys (Hemiptera: Pentatomidae), is a serious horticultural pest causing considerable damage to local production and international supply chains as it spreads around the world. The samurai wasp, Trissolcus japonicus (Hymenoptera: Scelionidae), is well recognised as the most promising classical biological control against BMSB. The wasp has been conditionally approved for release in New Zealand in the event the stink bug establishes here. Previous host range testing showed that all available non-target New Zealand pentatomids except a single exotic species were accepted for oviposition and that the parasitoid was capable of parasitising the eggs of two native pentatomids at proportions similar to BMSB. Only one New Zealand species of pentatomid, the endemic alpine shield bug Hypsithocus hudsonae, was not previously tested owing to the difficulty of collecting it from the field. Here we report the results of no-choice oviposition tests between H. hudsonae and T. japonicus, conducted in containment, to complement previous physiological host range testing of this parasitoid in New Zealand. Parasitoids emerged from 14 out of 15 egg masses, and in total, from 78 out of 83 eggs (94%). The mean sex ratio was 89% female, and no males emerged from six egg masses. H. hudsonae is confirmed as a physiological host for T. japonicus, and this finding is discussed in relation to the strengths and limitations of physiological host range studies.

中文翻译：

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Trissolcus japonicus (Ashmead)（膜翅目：Scelionidae）的先发制人宿主特异性测试在实验室无选择测试中揭示了对地方性新西兰高山盾虫的高寄生水平

Brown marmorated stink bug (BMSB) Halyomorpha halys (Hemiptera: Pentatomidae) 是一种严重的园艺害虫，随着它在世界各地蔓延，对当地生产和国际供应链造成了相当大的破坏。武士黄蜂Trissolcus japonicus（膜翅目：Scelionidae），被公认为最有前途的经典生物防治 BMSB。如果臭虫在这里滋生，黄蜂已被有条件地批准在新西兰发布。先前的寄主范围测试表明，除单个外来物种外，所有可用的非目标新西兰五倍体类动物都可以接受产卵，并且该类寄生物能够以与BMSB相似的比例寄生两种天然五倍体类动物的卵。由于难以从田间采集，之前只有一种新西兰五角虫物种，即地方性高山盾形虫Hypsithocus hudsonae未进行测试。在这里，我们报告了H. hudsonae和T. japonicus之间无选择产卵测试的结果，在遏制中进行，以补充新西兰之前对该寄生物的生理宿主范围测试。寄生蜂从 15 个卵块中的 14 个中出现，总共从 83 个卵中的 78 个（94%）中出现。平均性别比例为 89% 雌性，六个卵块中没有出现雄性。H. hudsonae被确认为T. japonicus的生理宿主，这一发现将结合生理宿主范围研究的优势和局限性进行讨论。