Cerambycid Pheromones Attract PredatorsTemnoscheila virescens(Coleoptera: Trogossitidae),Chariessa pilosa(Coleoptera: Cleridae), andApiomerus crassipes(Hemiptera: Reduviidae)

Abstract

In 2011–2013, we determined the interactive effects of the cerambycid pheromones racemic syn-2,3-hexanediol, racemic 3-hydroxyhexan-2-one, and racemic 3-hydroxyoctan-2-one on trap catches of predators associated with bark and woodboring beetles in north Georgia and South Carolina. Temnoscheila virescens (F.) (Coleoptera: Trogossitidae) was attracted to traps baited with 3-hydroxyhexan-2-one; ethanol enhanced attraction. Traps baited with syn-2,3-hexanediol attracted Chariessa pilosa (Forster) (Coleoptera: Cleridae); attraction was interrupted by 3-hydroxyhexan-2-one. An assassin bug Apiomerus crassipes (F.) (Hemiptera: Reduviidae) was attracted to traps baited with 3-hydroxyhexan-2-one and/or 3-hydroxyoctan-2-one. Ethanol had no effect on trap catches of C. pilosa and A. crassipes. We compared response profiles of these predators to those of longhorn beetles captured in these same studies to provide insights on possible ecological interactions between these species.

Predators attracted to combination of bark beetle pheromones and host kairomones in pine forests of southeastern United States

“…Bark and woodboring beetles that respond to the same semiochemicals may share the same resource, partitioning the resource over time or space (Brin and Bouget 2018). Predators responding to kairomones released by pines should place them in the same habitat as their prey (Miller 2023). Eavesdropping on bark beetle pheromones should further enhance the likelihood of predators finding prey, especially for those species that need to find larvae of bark and woodboring beetles in a timely manner for their larvae to have larval prey (Miller et al 2023).…”

“…dubius , Temnoscheila virescens (F.) (Coleoptera: Trogossitidae) and Lasconotus spp. (Coleoptera: Zopheridae) are also attracted to ethanol and α-pinene (Miller 2023). Ipsenol and ipsdienol are pheromones produced by several species of pine bark beetles, including those in the genus Ips (El-Sayed 2019).…”