Callosobruchusic acid is an insect pheromone and monoterpene that has been found as a component of the copulation release pheromone erectin in azuki bean weevils (C. chinensis).¹It induces copulation release activity in male azuki bean weevils (EC₅₀= 6.5 ng/insect).

1.Mori, K., Ito, T., Tanaka, K., et al.Synthesis and biological activity of optically active forms of (E)-3, 7-dimethyl-2-octene-1, 8-dioic acid (callosobruchusic acid): A component of the copulation release pheromone (erectin) of the azuki bean weevilTetrahedron39(13)2303-2306(1983)