Hylotrupes bajulus

II. Resistance to Hylotrupes bajulus attack. Material und Organismen, 33(2), 81-90. 

Terminal alkenes can be selectively oxidized to aldehydes by reaction with oxygen, using a palladium-copper catalyst in tertiary butanol (equation 35)160. This reaction is contrary to the normal oxidation process which yields a ketone as the major product. The palladium(II) oxidation of terminal alkenes to give methyl ketones is known as the Wacker process. It is a very well established reaction in both laboratory and industrial synthesis161162. The Wacker oxidation of alkenes has been used in the key step in the synthesis of the male sex pheromone of Hylotrupes bajulus (equation 36)163. 

Noldt U., Fettkother R. and Dettner K. (1995) Structure of the sex pheromone-producing prothoracic glands of the male old house borer, Hylotrupes bajulus (L.) (Coleoptera Cerambycidae). Int. J. Insect Morphol. Embrol. 24, 223-234. 

The most destructive beetle pests are those which attack seasoned wood in service, e.g. Anobium punctatum, Hylotrupes bajulus, Lyctus brunneus. Only a few species are capable of doing this, but those that do can cause serious problems. They include long-hom beetles, the common house borer or furniture beetle and powder post beetles. Given susceptible lumber and suitable conditions for development, all of the above insects are difficult and expensive, or in some cases impossible, to control. The use of preservative treated wood obviates the necessity for control. 

Old House Borers. Old house borer Hylotrupes bajulus) is prevalent in Northern Europe and is becoming common in the United States. The old... 

Figure 9. Section of white pine from an 18th-century church, degraded by Hylotrupes bajulus (old house borer). Note chamber concentration and random...

Occurrence In numerous essential oils cymen-2-ol especially in origanum (oregano) oil (Coridothymus capitatus, Lamiaceae) up to 80%, in savory and thyme oil up to 70% cymen-3-ol especially in essential oil of seeds of Orthodon angustifolium (Lamiaceae) up to 72% cymen-8-ol from the frass of the old house borer beetle Hylotrupes bajulus (Cerambycidae). Use Carvacrol as disinfectant and solvent thymol as stabilizer (0.01%) of halothanes and trichloroethene. Mixtures of thymol with methyl IV-methylanthranilate in appropriate ratios have a typical mandarin odor. lit Tetrahedron Lett. 1975, 3585. Helv. Chim. Acta 46, 1480(1963). 

Minor component of the male pheromone of Hylotrupes bajulus. Oil. Bp 60-61°. 1.4245. 

European Standard EN 46, 1990. Determination of the preventive action aginst recently hatched larvae of Hylotrupes bajulus (Linnaeus). European Standard EN 73,1988. Wood preservatives Accelerated ageing tests of treated wood prior to biological testing Evaporative ageing procedure. 

Plate 2 House longhorn adult beetle (Hylotrupes bajulus). 

European Standard EN 22 1974. Wood preservatives - Determination of eradicant action against Hylotrupes bajulus (Linnaeus) larvae (Laboratory method). 

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