Longhorned beetles (Coleoptera: Cerambycidae) include many species that are among the most damaging pests of managed and natural forest ecosystems worldwide. Many species of cerambycids use volatile chemical signals (i.e., pheromones) to locate mates. Pheromones are often used by natural enemies, including parasitoids, to locate hosts and therefore can be useful tools for identifying host-parasitoid relationships. In two field experiments, we baited linear transects of sticky traps with pheromones of cerambycid beetles in the subfamily Cerambycinae. Enantiomeric mixtures of four linear alkanes or four linear alkanes and a ketol were tested separately to evaluate their attractiveness to hymenopteran parasitoids. We hypothesized that parasitoids would be attracted to these pheromones. Significant treatment effects were found for 10 species of parasitoids. Notably, Wroughtonia ligator (Say) (Hymenoptera: Braconidae) was attracted to syn-hexanediols, the pheromone constituents of its host, Neoclytus acuminatus acuminatus (F.) (Coleoptera: Cerambycidae). Location and time of sampling also significantly affected responses for multiple species of parasitoids. These findings contribute to the basic understanding of cues that parasitoids use to locate hosts and suggest that pheromones can be used to hypothesize host relationships between some species of cerambycids and their parasitoids. Future work should evaluate response by known species of parasitoids to the complete blends of pheromones used by the cerambycids they attack, as well as other odors that are associated with host trees of cerambycids.

长角甲虫（Coleoptera：Cerambycidae）包括许多物种，它们是全球受管理和天然森林生态系统最具破坏力的害虫之一。许多种类的cerambycids使用挥发性化学信号（即信息素）来定位伴侣。信息素经常被包括寄生虫在内的天敌用来定位宿主，因此可以用作识别宿主与寄生虫之间关系的有用工具。在两个野外实验中，我们用粘虫科的Cerambycinae的cerambycid甲虫的信息素引诱了粘性陷阱的线性样条。分别测试了四种直链烷烃或四种直链烷烃与酮醇的对映体混合物，以评估它们对膜翅目寄生虫的吸引力。我们假设寄生虫会被这些信息素所吸引。发现对10种寄生虫有明显的治疗效果。值得注意的是Wroughtonia结扎器（说）（膜翅目：茧蜂科）被吸引到SYN -hexanediols，其主机的信息素成分，Neoclytus渐尖渐尖（F.）（鞘翅目：天牛科）。采样的位置和时间也显着影响多种寄生虫的反应。这些发现有助于对类寄生物用来定位宿主的线索的基本理解，并表明信息素可用于假设某些陶器类动物及其类寄生物之间的宿主关系。未来的工作应该评估已知种类的拟寄生虫对它们攻击的cerambycids使用的信息素的完全混合物以及与cerambycids寄主树相关的其他气味的反应。