Scolytus multistriatus smaller European

Often related insect species are not all sensitive to a particular allomone. For example, juglone is a feeding deterrent to the smaller European elm bark beetle (Scolytus multistriatus) but not to the closely related hickory bark beetle (Scolytus quadrispinosus) (106,107). 

Mori K. (1974) Synthesis of (15 2R 45 55)-(-)-a-multistnatin the pheromone in the smaller European elm bark beetle, Scolytus multistriatus. Tetrahedron 32, 1979-1981. 

Pearce G. T., Gore W. E., Silverstein R. M., Peacock J. W., Cuthbert R. A., Lanier G. N. and Simeone J. B. (1975) Chemical attractants for the smaller European elm bark beetle, Scolytus multistriatus (Coleoptera Scolytidae). J. Chem. Ecol. 1, 115-124. 

The terpenoid-exocrine theme emphasized by scolytid beetles was again evident when the chemical constitution of the secondary attractant for the smaller European elm bark beetle, Scolytus multistriatus, was elucidated. The aggregation pheromone was identified as a mixture of (-)-4-methyl-3-heptanol, 2,4-dimethyl-5-ethyl-6,8-dioxabicyclo [3.2.1]octane (multistriatin) (XXII), and (-)-a-cubebene (XXIII), a host-derived synergist (70). All three compounds are required for the maximum attraction of beetles. The inactive diastereomers of 4-methyl-3-heptanol and multistriatin did not inhibit the responses of airborne beetles. 

CgH.gO, Mr 130.23, bp. 160-161 °C. The (3S,45)-iso-mer, [a]n -23.3° (hexane), an important component of the aggregation pheromone (see pheromones) of bark beetles of the genus Scolytus, e.g. the smaller European bark beetle. S. multistriatus is a carrier of the fungus Ceratocystis ulmi causing death of elm trees. It also occurs in ants. The (3/ ,45)-stereoisomer is a trail pheromone of the ant Leptogenys diminuta, see also multistriatin. 

Pearce, G.T., W.E. Gore, R.M. Silverstein, J.W. Peacock, R.A. Cuthbert, G.N. Lanier, and J.W. Simeone Chemical Attractants for the Smaller European Elm Bark Beetle Scolytus multistriatus (Coleoptera Scolytidae). J. Chem. Ecol. 1,115-124 (1975). 

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