(Z)-10-Hexadecen-1-ol is a insect sex pheromones, which can be secreted by some female nocturnal moths, or by the heads of male bumblebees (Bombus spp.)[1].
[1] Horiike M, et al., Determination of the double‐bond position in hexadecenols by mass spectrometry without prior chemical modification[J]. Organic mass spectrometry, 1992, 27(9): 944-948.