02186naa a2200181 a 450000100080000000500110000800800410001910000190006024501090007926000090018852016290019765000160182665000140184265000200185665000190187665300330189577300760192812797372025-02-27       1987    bl uuuu     u00u1 u    #d1 aLEATHER, S. R.  aPine monoterpenes stimulate oviposition in the pine beauty moth, Panolis flammea.h[electronic resource]  c1987  aThe pine beauty moth, Panolis flammea D. & S. (Noctuidae), is a severe pest of Lodgepole pine, Pi- nus contorta Douglas, in northern Britain (Leather et al., 1985). Lodgepole pine, which occurs in a number of morphologically and chemically distinct provenances (seed origins) (Forrest, 1980a), was in- troduced to Britain from North America in 1853 but was not widely planted until the late 1950s and early 1960s (Lines, 1976). Adult female P. flammea are able to distinguish between different provenances of Pinus contorta and lay their eggs on those most suitable for the growth and survival of their offspring (Leather, 1985). Other studies of insect feeding and oviposi- tion behaviour indicate that the monoterpenes present in coniferous trees can act as deterrents or attractants (Alfaro et aL, 1980, 1981; Charles et aL, 1982). The different provenances of P contorta have characteristic monoterpene profiles in their shoot cortical oleoresin (Forrest, 1980a) and Leath- er et aI. (1985) postulated that female Panolisflam- mea were responding to these differences during oviposition. In particular, the ratio of/3 : ~-pinene in the cortical oleoresin, both of which are attrac- tive to some Lepidoptera, e.g. the spruce budworm in Canada (StUrdier, 1974), are well correlated with oviposition preferences in P flammea (Leather et al., 1985). This study was designed to elucidate whether P flammea can indeed distinguish between differing ratios of these two pinenes and, if so, whether it chooses to lay its eggs in response to the 13:~- pinene ratio characteristic of the host plants most favourable to its progeny.  aLepidoptera  aNoctuidae  aPanolis flammea  aPinus contorta  aEstimulantes da oviposição  tEntomologia Experimentalis et Applicatagv. 43, n. 3, p. 295-303, 1987.