When I accepted the invitation to serve as the lead-off speaker for the symposium Managing Bark and Ambrosia Beetles with Semiochemicals on which this special issue is based, I noted that everything one needed to know was published in Seybold et al. (2018), a really good review of the subject. So, I took another course. About 25 years ago, I gave an oral presentation in the form of a letter to an imaginary graduate student. It seemed to go over well, so I decided to do it again. Here is a version of that letter to Sarah, the latest prospective graduate student conjured up by my imagination.

中文翻译：

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用化学信息素处理树皮和失落的甲虫（鞘翅目：Curculionidae：Scolytinae）：给未来研究生的信

当我接受邀请作为本次特刊所基于的“用Semiochemicals管理树皮和Ambrosia甲虫”研讨会的主讲人时，我指出，需要了解的一切都已发表在Seybold等人的文章中。（2018），对该主题的评价很好。因此，我修了另一门课程。大约25年前，我以一封信给一位虚构的研究生作了口头介绍。看来一切顺利，所以我决定再做一次。这是写给莎拉的那封信的一个版本，莎拉是我的想象力所想到的最新准研究生。