| a sheep in wolf's clothing: tephritid flies mimic spider predators. | mimicry where prey resemble predators to avoid predation is unusual. snowberry flies, rhagoletis zephyria snow, possess striped wing patterns that resemble the legs of jumping spiders. observations and comparisons of responses of the jumping spider salticus scenicus (clerck) to conspecifics, snowberry flies, and other prey flies showed that snowberry flies can avoid predation by jumping spiders through spider mimicry. the mimicry effect was decreased by obliterating snowberry fly wing stripes. | 1987 | 17755554 |
| hybridization and the spread of the apple maggot fly, rhagoletis pomonella (diptera: tephritidae), in the northwestern united states. | hybridization may be an important process interjecting variation into insect populations enabling host plant shifts and the origin of new economic pests. here, we examine whether hybridization between the native snowberry-infesting fruit fly rhagoletis zephyria (snow) and the introduced quarantine pest r. pomonella (walsh) is occurring and may aid the spread of the latter into more arid commercial apple-growing regions of central washington state, usa. results for 19 microsatellites implied hybr ... | 2015 | 26366200 |
| identification of host fruit volatiles from snowberry (symphoricarpos albus), attractive to rhagoletis zephyria flies from the western united states. | a mixture of behaviorally active volatiles was identified from the fruit of snowberry, symphoricarpos albus laevigatus, for rhagoletis zephyria flies reared from snowberry fruit. a nine-component blend containing 3-methylbutan-1-ol (3%), dimethyl trisulfide (1%), 1-octen-3-ol (40%), myrcene (8%), nonanal (9%), linalool (13%), (3e)-4,8-dimethyl-1,3,7-nonatriene (dmnt, 6%), decanal (15%), and β-caryophyllene (5%) was identified that gave consistent electroantennogram activity and was behaviorally ... | 2017 | 28078623 |
| comparative responses of rhagoletis zephyria and rhagoletis pomonella (diptera: tephritidae) to commercial and experimental sticky traps and odors in washington state. | rhagoletis zephyria snow and rhagoletis pomonella (walsh) (diptera: tephritidae) are morphologically similar flies that attack white-colored snowberry fruit (symphoricarpos spp.) and yellow/red or dark-colored apple/hawthorn fruit (malus/crataegus spp.), respectively. the two flies are caught together on traps in r. pomonella surveys in the western united states, increasing labor needed to process catches. comparing responses of the two species with different traps could help identify best pract ... | 2017 | 29028975 |
| molecular species identification of cryptic apple and snowberry maggots (diptera: tephritidae) in western and central washington. | in washington state, identification of the quarantine apple pest rhagoletis pomonella (walsh) is complicated by the presence of the cryptic species rhagoletis zephyria snow (diptera: tephritidae). distinguishing the two flies is important because there is a zero tolerance policy for r. pomonella in apple production for export. here, we attempt to distinguish the two species by scoring r. pomonella and r. zephyria populations from western and south-central washington for a set of 11 nuclear marke ... | 2013 | 24331621 |