| relative differences in susceptibility of pieris taxa (ericaceae) to stephanitis spp. lace bugs (hemiptera: tingidae). | over 60 pieris taxa (ericaceae) were measured for their susceptibility to the andromeda lace bug, stephanitis takeyai drake and maa, and the azalea lace bug, stephanitis pyrioides (scott) (hemiptera: tingidae) based on leaf damage, adult survival on leaves, and emergence of nymphs in no-choice petri dish assays. pieris phillyreifolia (hook.) dc. and p. japonica (thunb.) d.don ex g.don 'variegata' were consistently resistant to both species of lace bugs, whereas p. japonica 'cavatine' was consist ... | 2012 | 23068171 |
| resistance mechanisms in pieris taxa (ericaceae) to stephanitis takeyai (hemiptera: tingidae). | this study examines some of the potential mechanisms of resistance in selected pieris (ericaceae) taxa to the andromeda lace bug, stephanitis takeyai drake and maa, based on differences in resistance to lace bug feeding, and the possible role of leaf parameters such as leaf wax, toughness, nutrient composition, and stomatal characters in plant resistance. experiments with extracts of leaf-surface lipids revealed that pieris leaf wax did not have a role in resistance to lace bug feeding. leaf wax ... | 2012 | 23068172 |
| exocrine secretions of the andromeda lace bugstephanitis takeyai (hemiptera: tingidae). | the four major components of the setal exudate of nymphs of the andromeda lace bug,stephanitis takeyai, were identified. they are 7-hydroxy-3-nonylchromanone1, the novel 3,5-dihydroxy-2-dodecanoylcyclohex-2-en-1-one2,2',6'-dihydroxydodecanophenone3, and its 3-hydroxy derivative4. only three species ofstephanitis commonly occur in the united states; withs. takeyai we have now identified the major compounds secreted by each of these species. the individual species of the genus are chemotaxonomical ... | 1990 | 24264090 |