| taxonomic re-evaluation of three related species of graphium, based on morphology, ecology and phylogeny. | two fungi associated with bark beetles, graphium pseudormiticum (described in 1994) and rhexographium fimbriisporum (described in 1995), have two micromorphological characters in common. both species produce conidia with conspicuous basal frills, and the conidia align in chains, despite being produced in slime. the association of g. pseudormiticum with the pine bark beetle, orthotomicus erosus, and the association of r. fimbriisporum with the spruce bark beetle, ips typographus, suggest ecologic ... | 2003 | 21148980 |
| electrophysiological and behavioral responses of ips subelongatus to semiochemicals from its hosts, non-hosts, and conspecifics in china. | volatiles from hosts, non-hosts, interspecifics, and conspecifics of the asian larch bark beetle, ips subelongatus motsch., were analyzed using both gas chromatographic-electroantennographic detection (gc-ead) and gas chromatography/mass spectrometry (gc-ms) techniques, and field trapping bioassays in inner mongolia, china. gc-ead experiments indicated that i. subelongatus antennae (both sexes) strongly responded not only to the major male-produced conspecific components, ipsenol, and ipsdienol, ... | 2007 | 17216361 |
| phenotypic and dna sequence data comparisons reveal three discrete species in the ceratocystis polonica species complex. | ceratocystis polonica and c. laricicola are two morphologically similar species that occur on conifers and reside in the ceratocystis coerulescens species complex. they, however, represent two ecologically distinct entities. c. polonica causes blue stain on norway spruce (picea abies) and other spruce species (picea spp.) in eurasia and is associated with the bark beetles ips typographus, i. typographus japonicus, i. amitinus and i. duplicatus. in contrast, c. laricicola lives in a symbiotic rel ... | 2005 | 16279408 |