Sex Attractant of a Clearwing Moth Synanthedon Nashivora (Lepidoptera: Sesiidae)

Abstract

\n A sex attractant of Synanthedon nashivora Naka and Yano, a pest of Asian pear discovered in Kyoto, Japan in 2014 and described as a novel species in 2019 was revealed. Pheromone lures baited mixtures with one or two of the seven compounds used as sex pheromones by Sesiidae species were prepared, and screening tests were conducted using these lures in pear orchards in Kyotango City, Kyoto Prefecture, Japan, from 2017 to 2018. Males were attracted to various mixture ratios, especially 7:3 mixture ratio, of (3Z,13Z)-3,13-octadecadienyl acetate (Z3,Z13-18:OAc) and (2E,13Z)-2,13-octadecadienyl acetate (E2,Z13-18:OAc) mixtures. This finding will enable monitoring of this species in Asian pear orchards. By attempting to search for males in the field using this pheromone lure, it will be possible to understand the distribution of this species in Japan and neighboring countries, its microhabitat, and the seasonal occurrence of this species.