A Systematic Review of the Ectemnius (Hymenoptera: Sphecidae) of Hawaii by Raina L. Takumi (Author) April 1999 Paperback $26.95, £23.00
How Not to Be Eaten: The Insects Fight Back by Gilbert Waldbauer (Author) April 2021 Paperback $24.95, £21.00|Hardcover $29.95, £25.00|eBook $29.95, £25.00